Action always passes when gem push fails

[dmorgan-fa]

The lines:

if ! gem push --key="$KEY" --host "$GEM_HOST" "$GEM_FILE" >push.out; then
    gemerr=$?
   [...]
   exit $gemerr
fi

Always return 0:

if ! gem push boop; then echo $?; fi       #   File doesn't exist, exit state is 0
ERROR:  While executing gem ... (Gem::Package::FormatError)
    No such file or directory @ rb_sysopen - boop
0

This causes the action to pass when it should fail, see:

• Gem not found
• Resource not found, unable to push