remove ruby 2.7 from CI workflow

Author: CharlesDelannoy

.github/workflows/continuous-integration-workflow.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       matrix:
         postgres: [ 11.7, 12.14, 15.2 ]
-        ruby: [ 2.7, 3.0, 3.1, 3.2 ]
+        ruby: [ 3.0, 3.1, 3.2 ]
     services:
       postgres:
         image: postgres:${{ matrix.postgres }}
@@ -68,8 +68,6 @@ jobs:
             gemfile: gemfiles/activerecord61.gemfile
           - ruby: "3.0"
             gemfile: gemfiles/activerecord60.gemfile
-          - ruby: 2.7
-            gemfile: gemfiles/activerecord60.gemfile
     env:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
     services: