ci: delete Gemfile.lock

https://bundler.io/blog/2018/01/17/making-gem-development-a-little-better.html

Author: flavorjones

.github/workflows/ci.yml

@@ -22,6 +22,7 @@ jobs:
         ruby: ["2.7", "3.0", "3.1"]
     steps:
       - uses: actions/checkout@v2
+      - run: rm Gemfile.lock
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{matrix.ruby}}
@@ -38,6 +39,7 @@ jobs:
     runs-on: ${{matrix.plat}}-latest
     steps:
       - uses: actions/checkout@v2
+      - run: rm Gemfile.lock
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: "3.1"

.github/workflows/gem-install.yml

@@ -23,6 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - run: rm Gemfile.lock
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: "3.1"