Publish `.nightly` tags nightly (#320) #408

Job	Run time
shellcheck	3s
Build heroku-20 (amd64)	4m 7s
Build heroku-22 (amd64)	3m 19s
Build heroku-24 (amd64)	2m 26s
Build heroku-24 (arm64)	8m 44s
Upload heroku-${{ matrix.stack-version }} runtime images	0s
Publish heroku-20 (amd64)	2m 30s
Publish heroku-22 (amd64)	2m 24s
Publish heroku-24 (amd64)	1m 34s
Publish heroku-24 (arm64)	1m 52s
Publish heroku-24 indices	7s
Promote heroku-${{ matrix.stack-version }} tags	0s
	27m 6s

Provide feedback