Fix yamllint errors and warnings

* In rubocop.yml
* In GitHub action configs

.github/workflows/js_tests.yml

@@ -1,4 +1,6 @@
+---
 name: JavaScript Testing
+# yamllint disable-line rule:truthy
 on:
   push:
     branches:

.github/workflows/ruby_tests.yml

@@ -1,6 +1,7 @@
 ---
 name: Ruby Tests
-"on":
+# yamllint disable-line rule:truthy
+on:
   push:
     branches:
       - main

.github/workflows/yamllint.yml

@@ -1,11 +1,11 @@
 ---
 name: Yaml Lint
-on: [push]  # yamllint disable-line rule:truthy
+# yamllint disable-line rule:truthy
+on: [push]
 jobs:
   lintAllTheThings:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - name: yaml-lint
         uses: ibiqlik/action-yamllint@v3
-

.rubocop.yml

@@ -1,3 +1,4 @@
+---
 inherit_gem:
   theforeman-rubocop:
     - strictest.yml