Merge pull request #18 from vinted/release-pipeline-ruby-version

Make release pipeline use ruby 3.0.4

.github/workflows/build_release_pipeline.yaml

@@ -1,20 +1,20 @@
 name: Build and release ruby gem
 
 on:
-  pull_request: 
+  pull_request:
     branches: [ master ]
   push:
   workflow_dispatch:
 
 jobs:
   build-release-pipeline:
     runs-on: ubuntu-latest
-    container: ruby:2.7.2
+    container: ruby:3.0.4
     steps:
       - uses: actions/checkout@v2
       - name: Setup
         run: |
-          apt-get update -y && apt-get install -y --no-install-recommends cmake=3.13.4-1
+          apt-get update -y && apt-get install -y --no-install-recommends cmake
           gem install bundler
           bundle install