chore(deps): update ruby/setup-ruby action to v1.248.0 (#2097)

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

Author: renovate[bot]

.github/workflows/repotests.yml

@@ -245,7 +245,7 @@ jobs:
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: '3.12'
-      - uses: ruby/setup-ruby@472790540115ce5bd69d399a020189a8c87d641f # v1.247.0
+      - uses: ruby/setup-ruby@a9bfc2ecf3dd40734a9418f89a7e9d484c32b990 # v1.248.0
         with:
           ruby-version: '3.4'
       - name: setup-cocoapods # Not using an action, as it is not implemented for windows!
@@ -1000,7 +1000,7 @@ jobs:
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: '3.12'
-      - uses: ruby/setup-ruby@472790540115ce5bd69d399a020189a8c87d641f # v1.247.0
+      - uses: ruby/setup-ruby@a9bfc2ecf3dd40734a9418f89a7e9d484c32b990 # v1.248.0
         with:
           ruby-version: '3.4'
       - name: pip install custom-json-diff