chore(deps): update docker.io/library/rockylinux docker tag to v9

.gitea/workflows/markdown-linters.yaml

@@ -17,6 +17,6 @@ jobs:
     - ubuntu-latest
     steps:
     - uses: actions/checkout@v6.0.3
-    - uses: DavidAnson/markdownlint-cli2-action@v21.0.0
+    - uses: DavidAnson/markdownlint-cli2-action@v23.2.0
       with:
         globs: '**/*.md'

Dockerfile.rockylinux8

@@ -1,4 +1,4 @@
-FROM docker.io/library/rockylinux:8
+FROM docker.io/library/rockylinux:9
 
 RUN dnf update --assumeyes && \
     dnf install --assumeyes bash-completion sudo && \