Improve GitHub action (#2364)

* Add YAML linter

* Drop GitHub registry login as its not required at this point

* Add YAML document start marker

* Fix YAMLlint issues

* Fix YAMLlint issues in .github yaml files

* Fix YAMLlint issue in .github/dependabot.yml

* Remove .github/move.yml

* Set dependabot to weekly

Co-authored-by: Joakim Sørensen <hi@ludeeus.dev>

* Use YAML strip option where appropriate

* Fix multiline string

Co-authored-by: Joakim Sørensen <hi@ludeeus.dev>

.github/workflows/builder.yml

@@ -1,3 +1,5 @@
+---
+# yamllint disable rule:line-length rule:truthy
 name: Build add-on
 
 env:
@@ -103,14 +105,6 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
-      - name: Login to GitHub Container Registry
-        if: env.BUILD_ARGS == '--docker-hub-check'
-        uses: docker/login-action@v1.14.1
-        with:
-          registry: ghcr.io
-          username: ${{ secrets.GIT_USER }}
-          password: ${{ secrets.GIT_TOKEN }}
-
       - name: Build ${{ matrix.addon }} add-on
         if: steps.check.outputs.build_arch == 'true'
         uses: home-assistant/builder@2022.03.1