chore: also rc-bump version of the cli-integ package when testing (#446)

This look confusing, because the tests will have a real-looking version
in logs (and not an obviously fake version ending in `.999`).

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Author: rix0rrr

.projenrc.ts

@@ -1603,6 +1603,9 @@ const cliInteg = configureProject(
         },
       },
     }),
+
+    // Append a specific version string for testing
+    nextVersionCommand: 'tsx ../../../projenrc/next-version.ts maybeRc',
   }),
 );
 cliInteg.eslint?.addIgnorePattern('resources/**/*.ts');