Bump buildpacks/github-actions from 5.8.3 to 5.8.4 (#339) #572

Job	Run time
Obtain CTC Lock	8s
Obtain CTC Lock	8s
shellcheck	4s
shellcheck	4s
Build heroku-20 (amd64)	4m 20s
Build heroku-20 (amd64)	4m 20s
Build heroku-22 (amd64)	3m 43s
Build heroku-22 (amd64)	3m 43s
Build heroku-24 (amd64)	3m 3s
Build heroku-24 (amd64)	3m 3s
Build heroku-24 (arm64)	2m 34s
Build heroku-24 (arm64)	2m 34s
Upload heroku-20 runtime images	14s
Upload heroku-20 runtime images	14s
Publish heroku-20 (amd64)	2m 58s
Publish heroku-20 (amd64)	2m 58s
Publish heroku-22 (amd64)	1m 53s
Publish heroku-22 (amd64)	1m 53s
Upload heroku-22 runtime images	32s
Upload heroku-22 runtime images	32s
Publish heroku-24 (amd64)	1m 34s
Publish heroku-24 (amd64)	1m 34s
Upload heroku-24 runtime images	29s
Upload heroku-24 runtime images	29s
Publish heroku-24 (arm64)	1m 22s
Publish heroku-24 (arm64)	1m 41s
Publish heroku-${{ matrix.stack-version }} indices	0s
Promote heroku-${{ matrix.stack-version }} tags	0s
Publish heroku-24 indices	7s
Promote heroku-20 tags	21s
Promote heroku-22 tags	22s
Promote heroku-24 tags	11s
	47m 8s

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