🧪 Fix pre-commit caching hook logging

The previous implementation mistakenly made use of backticks which
are interpreted in bash. Not anymore.

Author: webknjaz

.github/stdlib-workflows/reusable-tox/actions/post-src-checkout/action.yml

@@ -12,7 +12,7 @@ runs:
     if: fromJSON(inputs.calling-job-context).toxenv == 'pre-commit'
     run: >-
       >&2 echo Caching ~/.cache/pre-commit based on
-      the contents of `.pre-commit-config.yaml`...
+      the contents of '.pre-commit-config.yaml'...
     shell: bash
   - name: Cache pre-commit.com virtualenvs
     if: fromJSON(inputs.calling-job-context).toxenv == 'pre-commit'