adjust conditional v2

Author: LukasAud

.github/workflows/gem_ci.yml

@@ -46,7 +46,10 @@ jobs:
           fetch-depth: 1
       - name: "shellcheck"
         uses: reviewdog/action-shellcheck@v1
-        if: ${{ inputs.run_shellcheck == 'true' }} && ${{ inputs.ruby_version == '3.2' }}  && ${{ inputs.runs_on == 'ubuntu-latest' }}
+        if: |
+          inputs.run_shellcheck == true &&
+          inputs.ruby_version == '3.2' &&
+          inputs.runs_on == 'ubuntu-latest'
         with:
           check_all_files_with_shebangs: "true"