Merge pull request #173 from otan-cockroach/6.0.0beta3

gemspec: update to 6.0.0beta3

Author: otan

activerecord-cockroachdb-adapter.gemspec

@@ -4,7 +4,7 @@ $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 Gem::Specification.new do |spec|
   spec.name          = "activerecord-cockroachdb-adapter"
-  spec.version       = "6.0.0beta2"
+  spec.version       = "6.0.0beta3"
   spec.licenses      = ["Apache-2.0"]
   spec.authors       = ["Cockroach Labs"]
   spec.email         = ["[email protected]"]