ci: specify macos version

MacOS is specified by version number explicitly because tag
"macos-latest" refers to macos-11 or macos-12 randomly during
GitHub action's transition while macos 12 removed Python 2 which
is required by electron-builder.

Since latest electron-builder has supported python3, this hotfix
will not introduce python2 in host but downgrade it to macos 12

Ref: electron-userland/electron-builder#6606

.github/workflows/package.yml

@@ -4,8 +4,8 @@ on:
   push:
     branches:
       - master
-      - 'rc/**'
-      - 'hotfix/**'
+      - "rc/**"
+      - "hotfix/**"
 
 jobs:
   default:
@@ -35,7 +35,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
-          cache: 'yarn'
+          cache: "yarn"
 
       - name: Restore
         uses: actions/cache@v3
@@ -49,7 +49,7 @@ jobs:
         if: matrix.os == 'windows-2019'
         uses: microsoft/[email protected]
         env:
-          ACTIONS_ALLOW_UNSECURE_COMMANDS: 'true'
+          ACTIONS_ALLOW_UNSECURE_COMMANDS: "true"
 
       - name: Install libudev
         if: matrix.os == 'ubuntu-20.04'

.github/workflows/package_for_test.yml

@@ -30,7 +30,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
-          cache: 'yarn'
+          cache: "yarn"
 
       - name: Restore
         uses: actions/cache@v3
@@ -44,7 +44,7 @@ jobs:
         if: matrix.os == 'windows-2019'
         uses: microsoft/[email protected]
         env:
-          ACTIONS_ALLOW_UNSECURE_COMMANDS: 'true'
+          ACTIONS_ALLOW_UNSECURE_COMMANDS: "true"
 
       - name: Install libudev
         if: matrix.os == 'ubuntu-20.04'