docs: lxc-helper is now a dependency of the runner

Reviewed-on: https://code.forgejo.org/actions/cascading-pr/pulls/38
Reviewed-by: earl-warren <earl-warren@noreply.code.forgejo.org>

.forgejo/workflows/integration.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - id: forgejo
-        uses: https://code.forgejo.org/actions/setup-forgejo@v3.0.1
+        uses: https://code.forgejo.org/actions/setup-forgejo@v3.0.2
         with:
           user: root
           password: admin1234

README.md

@@ -100,15 +100,13 @@ linked with workflows using `cascading-pr` as follows.
 
 ```mermaid
 flowchart TD
-    lxc-helper(lxc-helper) --> act(act)
-    act --> runner(Forgejo runner)
+    lxc-helper(lxc-helper) --> runner(runner)
     runner --> setup-forgejo(setup-forgejo)
     setup-forgejo --> e2e(end-to-end)
     forgejo-curl(forgejo-curl.sh) --> setup-forgejo
     forgejo(forgejo) --> e2e
 
-    click lxc-helper "https://code.forgejo.org/forgejo/lxc-helpers/src/branch/main/.forgejo/workflows/cascade-act.yml"
-    click act "https://code.forgejo.org/forgejo/act/src/branch/main/.forgejo/workflows/cascade-runner.yml"
+    click lxc-helper "https://code.forgejo.org/forgejo/lxc-helpers/src/branch/main/.forgejo/workflows/cascade-runner.yml"
     click runner "https://code.forgejo.org/forgejo/runner/src/branch/main/.forgejo/workflows/cascade-setup-forgejo.yml"
     click setup-forgejo "https://code.forgejo.org/actions/setup-forgejo/src/branch/main/.forgejo/workflows/cascade-end-to-end.yml"
     click e2e "https://code.forgejo.org/actions/end-to-end"