chore(deps): update ruby/setup-ruby action to v1.257.0 (#2221)

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

Author: renovate[bot]

.github/workflows/repotests.yml

@@ -262,7 +262,7 @@ jobs:
           ~/.swiftly/bin/swiftly init --quiet-shell-followup && \
           . ~/.swiftly/env.sh && \
           hash -r
-      - uses: ruby/setup-ruby@efbf473cab83af4468e8606cc33eca9281bb213f # v1.256.0
+      - uses: ruby/setup-ruby@44511735964dcb71245e7e55f72539531f7bc0eb # v1.257.0
         with:
           ruby-version: '3.4'
       - name: Set up Python
@@ -1034,7 +1034,7 @@ jobs:
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: '3.12'
-      - uses: ruby/setup-ruby@efbf473cab83af4468e8606cc33eca9281bb213f # v1.256.0
+      - uses: ruby/setup-ruby@44511735964dcb71245e7e55f72539531f7bc0eb # v1.257.0
         with:
           ruby-version: '3.4'
       - name: pip install custom-json-diff