chore(ci): remove workflow_dispatch

.gitea/workflows/shellcheck.yml

@@ -3,13 +3,12 @@ name: Lint Shell files
 on:
   pull_request:
     branches: ["*"]
-    types: ["opened", "edited"]
-  workflow_dispatch: {}
+    types: ["opened", "reopened", "synchronize"]
 
 jobs:
   shellcheck:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4.2.2
-      - run: apt install shellcheck
+      - run: apt update --yes && apt install --yes shellcheck
       - run: find . -type f -name "*.sh" -exec shellcheck -a {} \;