build

Pin Alpine image digest and add SHA256 verification for TF provider #24208

Job	Run time
cleanups	3s
testmask	31s
integration-trigger-dependabot	-1s
integration-trigger	7s
validate-python-codegen	13s
make test (macos, terraform)	10m 36s
make test (windows, terraform)	16m 21s
make test (linux, terraform)	11m 10s
make test (macos, direct)	7m 58s
make test (windows, direct)	10m 20s
validate-generated-is-up-to-date	48s
make test (linux, direct)	5m 41s
make test-exp-aitools	0s
make test-pipelines	0s
make test-exp-ssh	0s
test-result	4s
	1h 3m 51s

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