Update mdlayher/apcupsd dependency

Used by apcupsd input plugin. The problem that occured was:
2020-11-20T14:06:51Z E! [inputs.apcupsd] Error in plugin: can't parse time: "02/19/2020"

go.mod

@@ -87,7 +87,7 @@ require (
 	github.com/lib/pq v1.3.0 // indirect
 	github.com/mailru/easyjson v0.0.0-20180717111219-efc7eb8984d6 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1
-	github.com/mdlayher/apcupsd v0.0.0-20190314144147-eb3dd99a75fe
+	github.com/mdlayher/apcupsd v0.0.0-20200608131503-2bf01da7bf1b
 	github.com/miekg/dns v1.0.14
 	github.com/mitchellh/go-testing-interface v1.0.0 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect

go.sum

@@ -280,6 +280,7 @@ github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
 github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-github/v32 v32.1.0 h1:GWkQOdXqviCPx7Q7Fj+KyPoGm4SwHRh8rheoPhd27II=
@@ -420,6 +421,8 @@ github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0j
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mdlayher/apcupsd v0.0.0-20190314144147-eb3dd99a75fe h1:yMrL+YorbzaBpj/h3BbLMP+qeslPZYMbzcpHFBNy1Yk=
 github.com/mdlayher/apcupsd v0.0.0-20190314144147-eb3dd99a75fe/go.mod h1:y3mw3VG+t0m20OMqpG8RQqw8cDXvShVb+L8Z8FEnebw=
+github.com/mdlayher/apcupsd v0.0.0-20200608131503-2bf01da7bf1b h1:Kcr+kPbkWZHFHXwl87quXUAmavS4/IMgu2zck3aiE7k=
+github.com/mdlayher/apcupsd v0.0.0-20200608131503-2bf01da7bf1b/go.mod h1:WYK/Z/aXq9cbMFIL5ihcA4sX/r/3/WCas/Qvs/2fXcA=
 github.com/mdlayher/genetlink v1.0.0 h1:OoHN1OdyEIkScEmRgxLEe2M9U8ClMytqA5niynLtfj0=
 github.com/mdlayher/genetlink v1.0.0/go.mod h1:0rJ0h4itni50A86M2kHcgS85ttZazNt7a8H2a2cw0Gc=
 github.com/mdlayher/netlink v0.0.0-20190409211403-11939a169225/go.mod h1:eQB3mZE4aiYnlUsyGGCOpPETfdQq4Jhsgf1fk3cwQaA=