Revert "pin git action setup-ruby to v1.268.0 until Lambda Builders support bundler 4.0.0 (#805)"

This reverts commit 719e7e9.

Author: reedham-aws

.github/workflows/build.yml

@@ -294,8 +294,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
-      # Pin to specific version until Lambda Builders support bundler 4.0.0
-      - uses: ruby/setup-ruby@v1.268.0
+      - uses: ruby/setup-ruby@v1
         with:
           ruby-version: "3.2"
       - run: make init