Build on latest macOS release Homebrew supports officially

Author: SimplyDanny

.github/workflows/deploying.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: macos-12
+    runs-on: macos-13
     strategy:
       matrix:
         channel: ['beta', 'release']

.github/workflows/testing.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   testing:
-    runs-on: macos-12
+    runs-on: macos-13
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1