build

Replace regex-based interpolation with character scanner #24230

Job	Run time
integration-trigger-dependabot	-1s
testmask	26s
cleanups	3s
validate-python-codegen	11s
validate-generated-is-up-to-date	1m 14s
make test-pipelines	0s
integration-trigger	10s
make test-exp-aitools (macos-latest)	3m 42s
make test-exp-aitools (ubuntu-latest)	2m 15s
make test-exp-ssh (windows-latest)	4m 32s
make test-exp-ssh (macos-latest)	3m 13s
make test-exp-ssh (ubuntu-latest)	2m 18s
make test (linux, direct)	5m 53s
make test (windows, direct)	10m 19s
make test (macos, terraform)	15m 56s
make test (windows, terraform)	16m 20s
make test (linux, terraform)	10m 3s
make test (macos, direct)	6m 5s
test-result	3s
	1h 22m 42s

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