try install from apt

.gitea/workflows/test-pr.yml

@@ -16,15 +16,7 @@ jobs:
         if: matrix.os == 'arm-ubuntu-latest'
         run: |
           apt update -y
-          apt install gpgv2 -y
-          curl -sSL https://rvm.io/mpapis.asc | gpg --import -
-          curl -sSL https://rvm.io/pkuczynski.asc | gpg --import -
-          curl -sSL https://get.rvm.io | bash -s stable
-          source /etc/profile.d/rvm.sh
-          rvm list known
-          rvm install ruby-3
-          rvm use ruby-3
-          ruby -v
+          apt install gpgv2 ruby-full -y
       - name: install tools
         run: |
           apt update -y