Update xalvarez/prevent-file-change-action action to v3 (#632)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/prevent-migrations-deletion.yaml

@@ -13,7 +13,7 @@ jobs:
 
         steps:
             - name: Prevent migrations files being changed or deleted
-              uses: xalvarez/prevent-file-change-action@v2.0.0
+              uses: xalvarez/prevent-file-change-action@v3.0.0
               with:
                 githubToken: ${{ secrets.GITHUB_TOKEN }}
                 pattern: '.*\/db\/.+\/migrations\/\d{4}\w*\.py$'