Install dependencies for the 2.6 and 3.4

Author: lloeki

.gitlab-ci.yml

@@ -99,7 +99,7 @@ install-dependencies:
   parallel:
     matrix:
       # Promote again when adding 3.4 support
-      - RUBY_VERSION: ["3.3", "3.2", "3.1", "3.0", "2.7"]
+      - RUBY_VERSION: ["3.4", "3.3", "3.2", "3.1", "3.0", "2.7", "2.6"]
         ARCH: [ "amd64", "arm64" ]
   stage: package
   needs: