[3.10] gh-114572: Fix locking in cert_store_stats and get_ca_certs (GH-114573) #103029

Job	Run time
Check for source changes	8s
Check for source changes	8s
Check if generated files are up to date	4m 45s
Check if generated files are up to date	4m 45s
Windows (x86)	9m 0s
Windows (x86)	9m 0s
Check if the ABI has changed	1m 28s
Check if the ABI has changed	1m 28s
macOS	15m 56s
macOS	15m 56s
Ubuntu	9m 41s
Ubuntu	9m 41s
Ubuntu SSL tests with OpenSSL (1.1.1w)	4m 9s
Ubuntu SSL tests with OpenSSL (1.1.1w)	4m 9s
Windows (x64)	9m 27s
Windows (x64)	9m 27s
Ubuntu SSL tests with OpenSSL (3.0.11)	4m 17s
Ubuntu SSL tests with OpenSSL (3.0.11)	4m 17s
Ubuntu SSL tests with OpenSSL (3.1.3)	1m 52s
Ubuntu SSL tests with OpenSSL (3.1.3)	1m 44s
	2h 1m 18s

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