ci: fix fedora testsuit runs-on

Author: Duncaen

.github/workflows/ci.yaml

@@ -43,7 +43,7 @@ jobs:
    fedora:
       strategy:
          fail-fast: false
-      runs-on: ubuntu-latest:46
+      runs-on: ubuntu-latest
       container: registry.fedoraproject.org/fedora-minimal:43
       steps:
          - uses: actions/checkout@v1