Update rubygems/configure-rubygems-credentials action to v2

Author: renovate[bot]

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
         run: sed -i "s/VERSION = \"0.0.0\"/VERSION = \"${{ github.ref_name }}\"/" lib/code0/identities/version.rb && bundle
 
       # Release
-      - uses: rubygems/configure-rubygems-credentials@v1.0.0
+      - uses: rubygems/configure-rubygems-credentials@v2.1.0
       - name: Publish gem
         run: bundle exec rake release:rubygem_push
       - name: Wait for release