Rename master to main

Author: C0urante

.github/workflows/prs_and_commits.yml

@@ -26,9 +26,9 @@
 name: Pull request checks
 on:
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
   push:
-    branches: [ master ]
+    branches: [ main ]
 
 # Disallow concurrent runs for the same PR by cancelling in-progress runs
 # when new commits are pushed

.github/workflows/release_pr_workflow.yml

@@ -57,10 +57,10 @@ jobs:
             exit 1
           fi
 
-      - name: Checkout master
+      - name: Checkout main
         uses: actions/checkout@v2
         with:
-          ref: master
+          ref: main
           fetch-depth: 0
 
       - name: Set up JDK 8