CI: intermittent macOS failures for make checksharedmods

[erlend-aasland]

I've seen a couple of these on main and on various PRs. Example failure:

https://github.com/python/cpython/actions/runs/4199421484/jobs/7284276265

Linked PRs

• gh-101981: Update macOS workflow #101991
• gh-101981: Build macOS as recommended by the devguide #102070
• [3.11] gh-101981: Build macOS as recommended by the devguide (GH-102070) #102072
• [3.10] gh-101981: Build macOS as recommended by the devguide (GH-102070) #102073
• gh-101981: Apply HOMEBREW related environment variables #102074
• [3.10] gh-101981: lib64 test #102076
• [3.10] gh-101981: Apply HOMEBREW related environment variables (gh-102074) #102081
• [3.11] gh-101981: Apply HOMEBREW related environment variables (gh-102074) #102082
• [3.9] gh-101981: Fix Ubuntu SSL tests with OpenSSL (3.1.0-beta1) CI i… #102094
• [3.8] gh-101981: Fix Ubuntu SSL tests with OpenSSL (3.1.0-beta1) CI i… #102095
• gh-101981: Consolidate macOS configure steps in CI #102131
• [3.11] gh-101981: Consolidate macOS configure steps in CI (GH-102131) #102177
• [3.10] gh-101981: Consolidate macOS configure steps in CI (GH-102131) #102178
• [3.9] gh-101981: Build macOS as recommended by the devguide (GH-102070) #102186
• [3.8] gh-101981: Build macOS as recommended by the devguide (GH-102070) #102187

[erlend-aasland]

FYI, this target runs /Tools/build/check_extension_modules.py using PYTHON_FOR_BUILD.

[erlend-aasland]

main has been failing regularly since a5024a2

[sblondon]

I wonder if this error is linked to actions/runner-images#7128