[chore] Try bumping ruby to bif dep/rpm tests (#31189)

Attempt to fix
https://github.com/open-telemetry/opentelemetry-collector-contrib/actions/runs/7876454427/job/21490717383

Author: TylerHelmuth

.github/workflows/build-and-test.yml

@@ -521,9 +521,9 @@ jobs:
       - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '2.6'
+          ruby-version: '3.3'
       - name: Install fpm
-        run: gem install --no-document fpm -v 1.11.0
+        run: gem install --no-document fpm -v 1.15.1
       - name: Download Collector Binaries
         uses: actions/download-artifact@v3
         with: