Move dependencies to stable version

gradle.properties

@@ -2,30 +2,30 @@ org.gradle.caching=true
 puppycrawlCheckstyleVersion=8.18
 group=org.ballerinalang
 version=0.7.0-alpha5-SNAPSHOT
-ballerinaLangVersion=2.0.0-alpha6-SNAPSHOT
+ballerinaLangVersion=2.0.0-alpha6
 mySQLDriverVersion=8.0.21
 checkstyleToolVersion=7.8.2
 githubSpotbugsVersion=4.0.5
 githubJohnrengelmanShadowVersion=5.2.0
 underCouchDownloadVersion=4.0.4
 researchgateReleaseVersion=2.8.0
 
-stdlibSqlVersion=0.6.0-alpha5-SNAPSHOT
+stdlibSqlVersion=0.6.0-alpha5
 
-stdlibIoVersion=0.6.0-alpha5-SNAPSHOT
-stdlibRegexVersion=0.7.0-alpha5-SNAPSHOT
-stdlibOsVersion=0.8.0-alpha5-SNAPSHOT
-stdlibTimeVersion=2.0.0-alpha5-SNAPSHOT
-stdlibCryptoVersion=1.1.0-alpha5-SNAPSHOT
-stdlibLogVersion=1.1.0-alpha5-SNAPSHOT
-stdlibFileVersion=0.7.0-alpha5-SNAPSHOT
+stdlibIoVersion=0.6.0-alpha5
+stdlibRegexVersion=0.7.0-alpha5
+stdlibOsVersion=0.8.0-alpha5
+stdlibTimeVersion=2.0.0-alpha5
+stdlibCryptoVersion=1.1.0-alpha5
+stdlibLogVersion=1.1.0-alpha5
+stdlibFileVersion=0.7.0-alpha5
 
-stdlibTransactionVersion=1.0.9-SNAPSHOT
-stdlibTaskVersion=2.0.0-alpha5-SNAPSHOT
-stdlibUuidVersion=0.10.0-alpha5-SNAPSHOT
-stdlibCacheVersion=2.1.0-alpha5-SNAPSHOT
-stdlibMimeVersion=1.1.0-alpha5-SNAPSHOT
-stdlibAuthVersion=1.1.0-alpha5-SNAPSHOT
-stdlibJwtVersion=1.1.0-alpha5-SNAPSHOT
-stdlibOAuth2Version=1.1.0-alpha5-SNAPSHOT
-stdlibHttpVersion=1.1.0-alpha5-SNAPSHOT
+stdlibTransactionVersion=1.0.9
+stdlibTaskVersion=2.0.0-alpha5
+stdlibUuidVersion=0.10.0-alpha5
+stdlibCacheVersion=2.1.0-alpha5
+stdlibMimeVersion=1.1.0-alpha5
+stdlibAuthVersion=1.1.0-alpha5
+stdlibJwtVersion=1.1.0-alpha5
+stdlibOAuth2Version=1.1.0-alpha5
+stdlibHttpVersion=1.1.0-alpha5