Update Github action for main branch (#394)

Author: haonanya1

.github/workflows/on-demand-verification.yml

@@ -19,7 +19,7 @@ on:
       ref_opencl-clang:
         description: 'opencl-clang ref to build with'
         required: true
-        default: master
+        default: main
       build_type:
         description: 'Build type to pass to CMake'
         required: true

.github/workflows/on-push-verification.yml

@@ -10,11 +10,11 @@ run-name: '${{ github.event_name }}: ${{ github.base_ref }} ${{ github.ref_name
 on:
   push:
     branches:
-      - master
+      - main
       - ocl-open-*
   pull_request:
     branches:
-      - master
+      - main
       - ocl-open-*
     types:
       - opened
@@ -25,10 +25,10 @@ on:
 jobs:
 
   verify_default_branch:
-    name: Verify for `master` branch
+    name: Verify for `main` branch
     # ref_name for 'on: push'
     # base_ref for 'on: pull_request'
-    if: ${{ (github.event_name == 'push' && github.ref_name == 'master') || (github.event_name == 'pull_request' && github.base_ref == 'master') }}
+    if: ${{ (github.event_name == 'push' && github.ref_name == 'main') || (github.event_name == 'pull_request' && github.base_ref == 'main') }}
     runs-on: ubuntu-22.04
     steps:
 
@@ -46,7 +46,7 @@ jobs:
     name: Verify for `ocl-open-*` release branch
     # ref_name for 'on: push'
     # base_ref for 'on: pull_request'
-    if: ${{ github.ref_name != 'master' && github.base_ref != 'master' }}
+    if: ${{ github.ref_name != 'main' && github.base_ref != 'main' }}
     runs-on: ubuntu-22.04
     steps:
 

.github/workflows/scheduled-verification.yml

@@ -13,7 +13,7 @@ on:
 jobs:
 
   verify-default-branches:
-    name: Verify `master` branch
+    name: Verify `main` branch
     runs-on: ubuntu-22.04
     steps:
 
@@ -25,7 +25,7 @@ jobs:
         with:
           ref_llvm: main
           ref_translator: main
-          ref_opencl-clang: master
+          ref_opencl-clang: main
 
   verify-release-branches:
     name: Verify `ocl-open-*` release branches