ci: update test failures, use macos-15

Author: amaanq

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-14]
+        os: [ubuntu-latest, windows-latest, macos-15]
     steps:
       - name: Checkout repository
         uses: actions/checkout@v5
@@ -55,7 +55,9 @@ jobs:
           invalid-files: |
             examples/go/src/cmd/compile/internal/syntax/testdata/*.go
             examples/go/src/cmd/compile/internal/types2/testdata/local/issue47996.go
+            examples/go/src/cmd/compile/internal/types2/testdata/local/issue68183.go
             examples/go/src/go/parser/testdata/issue42951/not_a_file.go/invalid.go
+            examples/go/src/encoding/json/v2/arshal_test.go
             examples/go/src/internal/types/testdata/**/*.go
             examples/go/test/bombad.go
             examples/go/test/const2.go