Remove BUNDLE_FROZEN workarounds from CI

No longer needed now that Gemfile.lock is not committed.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ursm

.github/workflows/release.yml

@@ -17,8 +17,6 @@ jobs:
         with:
           ruby-version: ruby
           bundler-cache: true
-        env:
-          BUNDLE_FROZEN: 'false'
       - uses: rubygems/release-gem@v1
       - run: gh release create ${{ github.ref_name }} --generate-notes
         env:

.github/workflows/test.yml

@@ -26,7 +26,4 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
-        env:
-          BUNDLE_GEMFILE: ${{ github.workspace }}/Gemfile
-          BUNDLE_FROZEN: 'false'
       - run: bundle exec rake test