Fix issue with checking gem push exit code in release workflow (#564)

* Fix issue with checking gem push exit code in release workflow

* Update .github/workflows/release.yml

Co-authored-by: Jimmy Bourassa <jbourassa@gmail.com>

---------

Co-authored-by: Jimmy Bourassa <jbourassa@gmail.com>

Author: jeffcharles

.github/workflows/release.yml

@@ -108,8 +108,9 @@ jobs:
           ls -l
           for i in *.gem; do
             if [ -f "$i" ]; then
-              if ! gem push "$i" >push.out; then
-                gemerr=$?
+              gem push "$i" >push.out
+              gemerr=$?
+              if [ -n "$gemerr" ]; then
                 sed 's/^/::error:: /' push.out
                 if ! grep -q "Repushing of gem" push.out; then
                   exit $gemerr