workflows: use latest version of asciidoctor container

.forgejo/workflows/doc.yaml

@@ -3,7 +3,7 @@ jobs:
   build-doc:
     runs-on: docker
     container:
-      image: git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.6
+      image: git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.7
     steps:
       - uses: actions/checkout@v4
       - run: cd doc && make
@@ -16,7 +16,7 @@ jobs:
     runs-on: docker
     if: github.ref == 'refs/heads/main'
     container:
-      image: git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.6
+      image: git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.7
     steps:
       - run: mkdir ~/.ssh && echo "${{ secrets.SSH_KEY }}" > ~/.ssh/id_ed25519 && chmod 0600 ~/.ssh/id_ed25519 && echo "${{ secrets.SSH_KNOWN_HOST }}" > ~/.ssh/known_hosts
       - uses: actions/download-artifact@v3