Showcase tests failed in the release PR

[blakeli0]

Showcase tests failed in the release PR with the following error

final class Version {
   // {x-version-update-start:gapic-showcase:current}
-  static final String VERSION = "0.18.0-SNAPSHOT";
+  static final String VERSION = "0.0.0-SNAPSHOT";
   // {x-version-update-end}
 
 }

See the error log for details.

[chingor13]

This looks like an interaction with release-please updating the showcase version when it probably shouldn't. We aren't actually releasing showcase, so we should be able to skip this version