use macos-latest runner

macos-12 is deprecated and the jobs don't start anymore, so see if we can run
fine on latest.

.github/workflows/benchmarks.yml

@@ -80,7 +80,7 @@ jobs:
       fail-fast: false
       matrix:
         # Show OS combos first in GUI
-        os: [ubuntu-latest, windows-latest, macos-12]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         python-version: ['3.9.18', '3.10.13', '3.11.5', '3.12.0']
         exclude:
           - os: windows-latest
@@ -92,7 +92,7 @@ jobs:
             python-version: '3.9.18'
           - os: macos-latest
             python-version: '3.10.13'
-          - os: macos-12
+          - os: macos-latest
             python-version: '3.12.0'
         include:
           - os: windows-latest
@@ -155,7 +155,7 @@ jobs:
       fail-fast: false
       matrix:
         # Show OS combos first in GUI
-        os: [ubuntu-latest, windows-latest, macos-12]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         python-version: ['3.11.5']
 
     runs-on: ${{ matrix.os }}

.github/workflows/integration_tests.yml

@@ -198,7 +198,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.11.5', '3.12.0']
-    runs-on: macos-12
+    runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/setup_build_env

.github/workflows/unit_tests.yml

@@ -89,7 +89,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.9.18', '3.10.13', '3.11.5', '3.12.0']
-    runs-on: macos-12
+    runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/setup_build_env