ci: drop macos-11 support

Author: jlp-craigmorten

.github/workflows/test-voiceover.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-11, macos-12, macos-13, macos-14]
+        os: [macos-12, macos-13, macos-14]
         browser: [chromium, firefox, webkit]
     steps:
       - uses: actions/checkout@v3

README.md

@@ -6,7 +6,6 @@
 
 ## [Documentation](https://guidepup.dev) | [API Reference](https://www.guidepup.dev/docs/api/class-guidepup)
 
-[![MacOS Big Sur Support](https://img.shields.io/badge/macos-Big_Sur-blue.svg?logo=apple)](https://apps.apple.com/id/app/macos-big-sur/id1526878132)
 [![MacOS Monetary Support](https://img.shields.io/badge/macos-Monetary-blue.svg?logo=apple)](https://apps.apple.com/us/app/macos-monterey/id1576738294)
 [![MacOS Ventura Support](https://img.shields.io/badge/macos-Ventura-blue.svg?logo=apple)](https://apps.apple.com/us/app/macos-ventura/id1638787999)
 [![MacOS Sonoma Support](https://img.shields.io/badge/macos-Somona-blue.svg?logo=apple)](https://apps.apple.com/us/app/macos-sonoma/id6450717509)