Increase freebuff rate limits #5980

Job	Run time
build-and-check	2m 58s
test-integration-packages/billing	1m 12s
test-integration-packages/internal	1m 3s
test-integration-packages/agent-runtime	50s
test-cli	50s
test-packages/billing	42s
test-.agents	43s
test-integration-common	50s
test-packages/internal	57s
test-web	1m 21s
test-integration-web	44s
test-integration-sdk	1m 20s
test-sdk	47s
test-packages/agent-runtime	44s
test-common	56s
test-integration-cli	49s
	16m 46s

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