Re-enable shellcheck in actionlint · johnbillion/plugin-infrastructure@f34f994

Calculated fingerprint of a2db37b7e255d004:1 for file .github/workflows/test-plugins.yml line 154, but found existing inconsistent fingerprint value 4021aaedaec321185964395c3ded30755a81408b6121cd804029cf919beb7df1