chore(ci): better check for Nocks changes (#491)

When there are no changes, asking Git to compare the db file directly
will always report change even though the actual data stored is the
same. Instead, we can compare a SQL dump to detect actual changes.

Co-authored-by: Kristoffer K. <merceyz@users.noreply.github.com>

.github/workflows/update-nock-files.yml

@@ -49,7 +49,13 @@ jobs:
 
       - name: Check if anything has changed
         id: contains-changes
-        run: echo "result=$(git --no-pager diff --quiet -- tests/nocks.db || echo "yes")" >> $GITHUB_OUTPUT
+        run: |
+          sqlite3 tests/nocks.db .dump > /tmp/before.sql
+          cp tests/nocks.db tests/nocks.db.new
+          git checkout HEAD -- tests/nocks.db
+          sqlite3 tests/nocks.db .dump > /tmp/after.sql
+          echo "result=$(git --no-pager diff --quiet --no-index /tmp/before.sql /tmp/after.sql || echo "yes")" >> "$GITHUB_OUTPUT"
+          mv tests/nocks.db.new tests/nocks.db
         shell: bash
 
       - name: Commit changes