build(deps): bump certifi from 2026.5.20 to 2026.6.17 in the python-dependencies group #818

Job	Run time
selftest-glob	18s
selftest-whitespace (windows-latest)	51s
selftest-runner-python (ubuntu-latest)	34s
selftest-xfail-invalid-inputs (/tmp/extremely-nonexistent-file)	15s
selftest-glob-multiple	22s
selftest-verify	21s
selftest-whitespace (ubuntu-latest)	25s
selftest-upload-artifacts	19s
selftest-xfail-verify-missing-options (true, https://github.com/sigstore/gh-action-sigstore-pytho...	15s
selftest-xfail-glob-input-expansion	16s
selftest-xfail-invalid-inputs (--this-should-not-work)	15s
selftest-identity-token	25s
selftest-xfail-verify-missing-options (true)	16s
selftest-staging	27s
selftest-xfail-verify-missing-options (false, https://github.com/sigstore/gh-action-sigstore-pyth...	16s
selftest-xfail-verify-missing-options (false, https://token.actions.githubusercontent.com)	12s
selftest (ubuntu-latest, platform-default)	19s
selftest-whitespace (macos-latest)	22s
selftest-xfail-verify-missing-options (true, https://token.actions.githubusercontent.com)	13s
selftest (windows-latest, 3.x)	34s
selftest (ubuntu-latest, 3.14)	17s
selftest (macos-latest, 3.14)	33s
selftest (windows-latest, 3.14)	37s
selftest (macos-latest, 3.10)	51s
selftest (windows-latest, 3.10)	36s
selftest (ubuntu-latest, 3.x)	22s
selftest (macos-latest, 3.x)	16s
selftest (ubuntu-latest, 3.10)	17s
all-selftests-pass	3s
	11m 7s

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