Update the testing matrix (#1442)

Author: lgebhardt

.docker/ruby_versions.txt

@@ -1,4 +1,4 @@
-2.7.7
-3.0.5
-3.1.3
-3.2.1
+3.0.6
+3.1.4
+3.2.3
+3.3.0

.github/workflows/ruby.yml

@@ -38,28 +38,21 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
+          - '3.3'
           - '3.2'
           - '3.1'
           - '3.0'
-          - '2.7'
         rails:
           - '7.1'
           - '7.0'
           - '6.1'
-          - '6.0'
         database_url:
           - sqlite3:test_db
           - postgresql://postgres:password@localhost:5432/test
           - mysql2://root:root@127.0.0.1:3306/test
-        exclude:
-          - ruby: '3.2'
-            rails: '6.0'
-          - ruby: '3.1'
-            rails: '6.0'
-          - ruby: '3.1'
-            rails: '5.1'
-          - ruby: '3.0'
-            rails: '6.0'
+#        exclude:
+#          - ruby: '3.1'
+#            rails: '6.0'
     env:
       RAILS_VERSION: ${{ matrix.rails }}
       DATABASE_URL: ${{ matrix.database_url }}