Update actions, documentation templates and configuration files to v0.9.0 (#637)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Francisco Diaz <francisco.d@47deg.com>

Author: 3 people

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ name: Formatters & Tests
 
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
 
 jobs:
@@ -20,7 +20,7 @@ jobs:
         with:
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           ref: ${{ github.event.pull_request.head.ref }}
-      - name: Checkout project (master)
+      - name: Checkout project (main)
         if: github.event_name == 'push'
         uses: actions/checkout@v2
       - name: Label PR

.github/workflows/docs.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           token: ${{ secrets.ADMIN_GITHUB_TOKEN }}
-          ref: master
+          ref: main
       - name: Fetch tags
         run: git fetch --tags
       - name: Setup Scala

.github/workflows/release-drafter.yml

@@ -3,7 +3,7 @@ name: Drafts/updates the next repository release
 on:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   update_release_draft:

.github/workflows/release.yml

@@ -8,7 +8,7 @@ on:
   release:
     types: [published]
   push:
-    branches: master
+    branches: main
 
 jobs:
   release: