CI: Upgrade to macos-latest (macos-12 currently)

This avoids a SIGSEGV for bazel_6 from nixpkgs, see NixOS/nixpkgs#273745.

Author: avdv

.github/workflows/workflow.yaml

@@ -43,7 +43,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-11]
+        os: [ubuntu-latest, macos-latest]
         module: [rules_haskell, rules_haskell_nix, rules_haskell_tests]
         bzlmod: [true, false]
         ghc:
@@ -144,7 +144,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-11, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         module: [rules_haskell, rules_haskell_tests]
         bzlmod: [true, false]
         ghc:
@@ -165,14 +165,14 @@ jobs:
       # prevent auto-detection of system compilers on Windows
       BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN: ${{ matrix.os == 'windows-latest' && 1 || 0 }}
       # do not use Xcode on macOS
-      BAZEL_USE_CPP_ONLY_TOOLCHAIN: ${{ matrix.os == 'macos-11' && 1 || 0 }}
+      BAZEL_USE_CPP_ONLY_TOOLCHAIN: ${{ matrix.os == 'macos-latest' && 1 || 0 }}
       GHC_VERSION: ${{ matrix.ghc }}
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/free_disk_space_on_linux
       - uses: ./.github/actions/install_apt_pkgs
-        with: 
+        with:
           packages: libtinfo5
       - name: Mount Bazel cache
         uses: actions/cache@v3