Fix main rename breaking github scripts

.github/workflows/android.yml

@@ -3,12 +3,12 @@ name: Android CI
 on:
   push:
     branches:
-      - master
+      - main
       - staging
       - trying
   pull_request:
     branches:
-      - master
+      - main
 
 jobs:
   build:

.github/workflows/calibreapp-image-actions.yml

@@ -1,8 +1,8 @@
-name: Compress Images on Push to Master
+name: Compress Images on Push to Main
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - '**.jpg'
       - '**.jpeg'

.github/workflows/changelog-to-fastlane.yml

@@ -2,7 +2,7 @@ name: Convert CHANGELOG to Fastlane
 on:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   convert_changelog_to_fastlane:

.github/workflows/contributors-to-file.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   contributors_to_file:
     runs-on: ubuntu-latest
-    if: github.ref == 'refs/heads/master'
+    if: github.ref == 'refs/heads/main'
     name: Write contributors to file
     steps:
     - name: Checkout repo