Upgrade Python to 3.9 and add Embedding Regression Tests (#1006) #18

Job	Run time
Check if image already exists in ECR	7s
Build and Push Image / Start self-hosted EC2 runner	1m 31s
Build and Push Image / Build docker image	9m 38s
Build and Push Image / Stop self-hosted EC2 runner	5s
Orchestrate backwards compatibility test execution	10s
Run all execution workflows (2.12.5) / Start self-hosted EC2 runner	2m 53s
Run all execution workflows (2.11.4) / Start self-hosted EC2 runner	2m 50s
Run all execution workflows (2.13.2) / Start self-hosted EC2 runner	3m 10s
Run all execution workflows (2.11.4) / backwards_compatibility	8m 54s
Run all execution workflows (2.12.5) / backwards_compatibility	8m 33s
Run all execution workflows (2.13.2) / backwards_compatibility	15m 46s
Run all execution workflows (2.12.5) / Stop self-hosted EC2 runner	6s
Run all execution workflows (2.11.4) / Stop self-hosted EC2 runner	4s
Run all execution workflows (2.13.2) / Stop self-hosted EC2 runner	9s
	53m 56s

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