feature: add the AWS RDS cert bundles (#329) #509

Job	Run time
Obtain CTC Lock	0s
shellcheck	5s
Build heroku-20 (amd64)	4m 26s
Build heroku-22 (amd64)	3m 39s
Build heroku-24 (amd64)	2m 48s
Build heroku-24 (arm64)	2m 5s
Upload heroku-${{ matrix.stack-version }} runtime images	0s
Publish heroku-20 (amd64)	2m 55s
Publish heroku-22 (amd64)	1m 54s
Publish heroku-24 (amd64)	1m 36s
Publish heroku-24 (arm64)	2m 15s
Publish heroku-24 indices	18s
Promote heroku-${{ matrix.stack-version }} tags	0s
	22m 1s

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