Fix yamllint (#6253)

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ on:
       - "**"
       - "!.github/workflows/*.yml"
       - ".github/workflows/ci.yml"
+      - "!.yamllint"
   merge_group:
 
 permissions:

.github/workflows/needs-docs.yml

@@ -1,5 +1,6 @@
 name: Needs Docs
 
+# yamllint disable-line rule:truthy
 on:
   pull_request:
     types: [labeled, unlabeled]

.github/workflows/sync-device-classes.yml

@@ -1,6 +1,7 @@
 ---
 name: Synchronise Device Classes from Home Assistant
 
+# yamllint disable-line rule:truthy
 on:
   workflow_dispatch:
   schedule:

.github/workflows/yaml-lint.yml

@@ -1,5 +1,7 @@
+---
 name: YAML lint
 
+# yamllint disable-line rule:truthy
 on:
   push:
     branches: [dev, beta, release]
@@ -20,3 +22,5 @@ jobs:
         uses: actions/checkout@v4.1.1
       - name: Run yamllint
         uses: frenck/action-yamllint@v1.5.0
+        with:
+          strict: true