Remove colon from directory name #5851

Job	Run time
build-and-check	2m 59s
test-integration-packages/internal	1m 6s
test-integration-packages/billing	1m 10s
test-integration-cli	42s
test-integration-packages/agent-runtime	48s
test-packages/agent-runtime	50s
test-integration-sdk	1m 16s
test-cli	53s
test-sdk	46s
test-packages/billing	35s
test-common	48s
test-integration-common	46s
test-packages/internal	55s
test-integration-web	47s
test-web	47s
test-.agents	42s
	15m 50s

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