ci: fix Windows Gitlab test running (#2870)

* Try to fix the problem with py trying to execute the shebang

* run whenever the branch name starts with gitlab

* Modernise GitLab CI config

- Windows: remove stale servercore:1809 image and choco install
  (runners are now Windows 2022 VMs with Python 3.13 pre-installed)
- macOS: update deprecated macos-14-xcode-15 to macos-15-xcode-16
- Linux: bump Python image from 3.12 to 3.13
- All jobs: also run on gitlab* branches with CIBW_ENABLE=all

Generated with the help of AI (Amp/Claude Opus 4.7)

Amp-Thread-ID: https://ampcode.com/threads/T-019e6496-f89a-74e7-9f6b-655574290e68
Co-authored-by: Amp <amp@ampcode.com>

* ci: exclude graalpy on GitLab Windows runners

GraalPy is JVM-based and slow to start; on the small (2-core) GitLab
SaaS Windows runners, virtualenv's interpreter query for graalpy.exe
times out, failing test_0_basic::test[pip]. Restrict the Windows job's
CIBW_ENABLE to all groups except graalpy (other platforms keep "all").

CIBW_ENABLE rather than CIBW_SKIP is used so the test's expected-wheel
set (derived from CIBW_ENABLE) stays consistent with what is built.

Assisted-by: ClaudeCode:claude-opus-4.8
Signed-off-by: Henry Schreiner <henryfs@princeton.edu>

---------

Signed-off-by: Henry Schreiner <henryfs@princeton.edu>
Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: Henry Schreiner <henryfs@princeton.edu>

.gitlab-ci.yml

@@ -1,5 +1,5 @@
 linux:
-  image: python:3.12
+  image: python:3.13
   services:
     - name: docker:dind
       entrypoint: ["env", "-u", "DOCKER_HOST"]
@@ -14,7 +14,7 @@ linux:
     # (comment the below line in a PR to debug a Gitlab-specific issue)
     PYTEST_ADDOPTS: -k "unit_test or test_0_basic" --suppress-no-test-exit-code
   rules:
-    - if: '$CI_COMMIT_BRANCH == "main"'
+    - if: '$CI_COMMIT_BRANCH == "main" || $CI_COMMIT_BRANCH =~ /^gitlab/'
       variables:
         CIBW_ENABLE: "all"
   script:
@@ -25,28 +25,29 @@ linux:
     - python ./bin/run_tests.py
 
 windows:
-  image: mcr.microsoft.com/windows/servercore:1809
   variables:
     PYTEST_ADDOPTS: -k "unit_test or test_0_basic" --suppress-no-test-exit-code
-  before_script:
-    - choco install python -y --allow-downgrade --version 3.12.4
   rules:
-    - if: '$CI_COMMIT_BRANCH == "main"'
+    - if: '$CI_COMMIT_BRANCH == "main" || $CI_COMMIT_BRANCH =~ /^gitlab/'
       variables:
-        CIBW_ENABLE: "all"
+        # Everything except graalpy. GraalPy is JVM-based and very slow to
+        # start; on the small (2-core) GitLab SaaS Windows runners,
+        # virtualenv's interpreter query for graalpy.exe times out, failing
+        # the build. (Other platforms run the full "all" group.)
+        CIBW_ENABLE: "cpython-prerelease pypy pypy-eol pyodide-eol pyodide-prerelease"
   script:
-    - py -m pip install -U pip
-    - py -m pip install -e. pytest-custom-exit-code --group test
-    - py bin\run_tests.py
+    - python -m pip install -U pip
+    - python -m pip install -e. pytest-custom-exit-code --group test
+    - python bin\run_tests.py
   tags:
     - saas-windows-medium-amd64
 
 macos:
-  image: macos-14-xcode-15
+  image: macos-15-xcode-16
   variables:
     PYTEST_ADDOPTS: -k "unit_test or test_0_basic" --suppress-no-test-exit-code
   rules:
-    - if: '$CI_COMMIT_BRANCH == "main"'
+    - if: '$CI_COMMIT_BRANCH == "main" || $CI_COMMIT_BRANCH =~ /^gitlab/'
       variables:
         CIBW_ENABLE: "all"
   script: