gh-119538: Add missing expat build dependencies #113975

Job	Run time
Check for source changes	9s
Check if generated files are up to date	5m 9s
Docs	0s
Address sanitizer	8m 48s
Ubuntu SSL tests with OpenSSL (1.1.1w)	2m 2s
Hypothesis tests on Ubuntu	5m 26s
Ubuntu SSL tests with OpenSSL (3.0.13)	1m 53s
Ubuntu SSL tests with OpenSSL (3.1.5)	2m 9s
Ubuntu SSL tests with OpenSSL (3.2.1)	1m 56s
CIFuzz	0s
Windows (free-threading) / build and test (x64)	20m 14s
Windows (free-threading) / build (arm64)	2m 45s
Windows (free-threading) / build and test (x86)	21m 40s
macOS / build and test (macos-14)	13m 2s
macOS / build and test (macos-13)	10m 29s
macOS (free-threading) / build and test (macos-14)	8m 34s
Ubuntu / build and test	7m 13s
Windows / build and test (x64)	18m 54s
Windows / build (arm64)	3m 3s
Windows / build and test (x86)	16m 51s
Thread sanitizer / Thread sanitizer	5m 6s
Thread sanitizer (free-threading) / Thread sanitizer	7m 13s
Ubuntu (free-threading) / build and test	10m 29s
WASI / build and test	12m 53s
All required checks pass	2s
	3h 6m 0s

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