csvw:aboutUrl bug when dimension column contains URI-unsafe characters

[robons]

When generating a CSV-W which contains URI-unsafe characters in a dimension column, csv2rdf of the output fails due to invalid aboutUrls being generated.

Performing CSV2RDF operation with arguments atmospheric-emissions-greenhouse-gases-by-industry-and-gas-1990-2020.ttl
 Exception in thread "main" java.lang.IllegalArgumentException: Illegal character in fragment at index 206: atmospheric-emissions-greenhouse-gases-by-industry-and-gas-1990-2020.csv#obs/1990,http://gss-data.org.uk/data/gss_data/climate-change/ons-atmospheric-emissions-greenhouse-gases-by-industry-and-gas-1990-2020#concept/sic-2007/consumer-expenditure,ghg-total@mass-of-air-emissions-of-carbon-dioxide-equivalent
 	at java.base/java.net.URI.create(URI.java:906)
 	at java.base/java.net.URI.resolve(URI.java:1089)
 	at csv2rdf.util$resolve_uri.invokeStatic(util.clj:115)
 	at csv2rdf.util$resolve_uri.invoke(util.clj:105)
 	at csv2rdf.metadata.uri_template_property$resolve_uri_template_property.invokeStatic(uri_template_property.clj:22)
 	at csv2rdf.metadata.uri_template_property$resolve_uri_template_property.invoke(uri_template_property.clj:17)
 	at csv2rdf.tabular.csv$get_cell_urls.invokeStatic(csv.clj:138)
 	at csv2rdf.tabular.csv$get_cell_urls.invoke(csv.clj:137)
 	at csv2rdf.tabular.csv$annotate_row$fn__7904.invoke(csv.clj:149)
 	at clojure.core$map$fn__5851.invoke(core.clj:2755)
 	at clojure.lang.LazySeq.sval(LazySeq.java:42)
 	at clojure.lang.LazySeq.seq(LazySeq.java:51)
 	at clojure.lang.RT.seq(RT.java:531)
 	at clojure.lang.LazilyPersistentVector.create(LazilyPersistentVector.java:44)
 	at clojure.core$vec.invokeStatic(core.clj:377)
 	at clojure.core$vec.invoke(core.clj:367)
 	at csv2rdf.tabular.csv$annotate_row.invokeStatic(csv.clj:154)
 	at csv2rdf.tabular.csv$annotate_row.invoke(csv.clj:143)
 	at csv2rdf.tabular.csv$annotate_rows$fn__7919.invoke(csv.clj:182)
 	at clojure.core$map$fn__5851.invoke(core.clj:2753)
 	at clojure.lang.LazySeq.sval(LazySeq.java:42)
 	at clojure.lang.LazySeq.seq(LazySeq.java:51)
 	at clojure.lang.RT.seq(RT.java:531)
 	at clojure.core$seq__5387.invokeStatic(core.clj:137)
 	at clojure.core$seq__5387.invoke(core.clj:137)
 	at csv2rdf.util$liberal_mapcat.invokeStatic(util.clj:287)
 	at csv2rdf.util$liberal_mapcat.invoke(util.clj:284)
 	at csv2rdf.util$liberal_mapcat$fn__3776.invoke(util.clj:288)
 	at clojure.lang.LazySeq.sval(LazySeq.java:42)
 	at clojure.lang.LazySeq.seq(LazySeq.java:58)
 	at clojure.lang.RT.seq(RT.java:531)
 	at clojure.core$seq__5387.invokeStatic(core.clj:137)
 	at clojure.core$concat$fn__5478.invoke(core.clj:725)
 	at clojure.lang.LazySeq.sval(LazySeq.java:42)
 	at clojure.lang.LazySeq.seq(LazySeq.java:51)
 	at clojure.lang.RT.seq(RT.java:531)
 	at clojure.core$seq__5387.invokeStatic(core.clj:137)
 	at clojure.core$seq__5387.invoke(core.clj:137)
 	at grafter_2.rdf4j.io$eval8966$fn__8969.invoke(io.clj:553)
 	at grafter_2.rdf.protocols$eval6914$fn__6915$G__6905__6946.invoke(protocols.cljc:45)
 	at csv2rdf.csvw$csv__GT_rdf__GT_destination.invokeStatic(csvw.clj:44)
 	at csv2rdf.csvw$csv__GT_rdf__GT_destination.invoke(csvw.clj:39)
 	at csv2rdf.csvw$csv__GT_rdf__GT_file.invokeStatic(csvw.clj:53)
 	at csv2rdf.csvw$csv__GT_rdf__GT_file.invoke(csvw.clj:46)
 	at clojure.lang.Var.invoke(Var.java:399)
 	at uk.gsscogs.build.Csv2Rdf$.convertFile(Csv2Rdf.scala:19)
 	at uk.gsscogs.build.Operator$.validateAndPerformCsv2RdfOp(Operator.scala:151)
 	at uk.gsscogs.build.Operator$.$anonfun$performOperationsForFile$1(Operator.scala:49)
 	at uk.gsscogs.build.Operator$.$anonfun$performOperationsForFile$1$adapted(Operator.scala:46)
 	at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:563)
 	at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:561)
 	at scala.collection.AbstractIterable.foreach(Iterable.scala:919)
 	at uk.gsscogs.build.Operator$.performOperationsInternal$1(Operator.scala:46)
 	at uk.gsscogs.build.Operator$.performOperationsForFile(Operator.scala:84)
 	at uk.gsscogs.build.Operator$.performOperations(Operator.scala:27)
 	at uk.gsscogs.build.Main$.delayedEndpoint$uk$gsscogs$build$Main$1(Main.scala:37)
 	at uk.gsscogs.build.Main$delayedInit$body.apply(Main.scala:11)
 	at scala.Function0.apply$mcV$sp(Function0.scala:39)
 	at scala.Function0.apply$mcV$sp$(Function0.scala:39)
 	at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:17)
 	at scala.App.$anonfun$main$1(App.scala:76)
 	at scala.App.$anonfun$main$1$adapted(App.scala:76)
 	at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:563)
 	at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:561)
 	at scala.collection.AbstractIterable.foreach(Iterable.scala:919)
 	at scala.App.main(App.scala:76)
 	at scala.App.main$(App.scala:74)
 	at uk.gsscogs.build.Main$.main(Main.scala:11)
 	at uk.gsscogs.build.Main.main(Main.scala)
 Caused by: java.net.URISyntaxException: Illegal character in fragment at index 206: atmospheric-emissions-greenhouse-gases-by-industry-and-gas-1990-2020.csv#obs/1990,http://gss-data.org.uk/data/gss_data/climate-change/ons-atmospheric-emissions-greenhouse-gases-by-industry-and-gas-1990-2020#concept/sic-2007/consumer-expenditure,ghg-total@mass-of-air-emissions-of-carbon-dioxide-equivalent
 	at java.base/java.net.URI$Parser.fail(URI.java:2974)
 	at java.base/java.net.URI$Parser.checkChars(URI.java:3145)
 	at java.base/java.net.URI$Parser.parse(URI.java:3189)
 	at java.base/java.net.URI.<init>(URI.java:623)
 	at java.base/java.net.URI.create(URI.java:904)
 	... 68 more