ci: Switch to use macos-latest (#7592)

Closes #6508

.github/workflows/build-and-test.yaml

@@ -59,15 +59,10 @@ jobs:
             browser: Opera
             extra_flags: "--use-xvfb"
 
-          # Use macos-13 for these browsers, due to
-          # https://github.com/shaka-project/shaka-player/issues/6508
-          # Matching checks for macos-13 below should be updated as well when
-          # this is reverted.
-          - os: macos-13
+          - os: macos-latest
             browser: Chrome
-          - os: macos-13
+          - os: macos-latest
             browser: Edge
-
           - os: macos-latest
             browser: Opera
           - os: macos-latest
@@ -138,7 +133,7 @@ jobs:
       # Testing" fixes this.
       - name: 'Delete "Chrome for Testing" on Mac'
         timeout-minutes: 5
-        if: matrix.os == 'macos-13' && matrix.browser == 'Chrome'
+        if: matrix.os == 'macos-latest' && matrix.browser == 'Chrome'
         run: sudo rm -rf /Applications/Google\ Chrome\ for\ Testing.app
       - name: 'Overwrite "Chrome for Testing" on Windows'
         timeout-minutes: 5
@@ -163,7 +158,7 @@ jobs:
         run: brew install --cask firefox
       - name: 'Install Edge on Mac'
         timeout-minutes: 5
-        if: matrix.os == 'macos-13' && matrix.browser == 'Edge'
+        if: matrix.os == 'macos-latest' && matrix.browser == 'Edge'
         run: brew install --cask microsoft-edge
       - name: 'Install Opera on Mac'
         timeout-minutes: 5