re-add (updated version of) `push-templates-tag` to release.yml #17

Job	Run time
build and sign release assets (ubuntu-20.04, amd64, --features openssl/vendored, target/release)	13m 18s
Build Spin static (aarch64, aarch64-unknown-linux-musl, -C target-feature=+fp16 -C target-feature...	13m 24s
Build Spin static (amd64, x86_64-unknown-linux-musl, -C target-feature=+crt-static -C link-self-c...	6m 32s
build and sign release assets (ubuntu-20.04, aarch64, --features openssl/vendored --target aarch6...	14m 4s
build and sign release assets (macos-latest, amd64, target/release)	16m 12s
push-templates-tag	3s
build and sign release assets (macos-latest, aarch64, --target aarch64-apple-darwin, aarch64-appl...	34m 4s
build and sign release assets (windows-latest, amd64, .exe, target/release)	25m 5s
generate release checksums	8s
create GitHub release	21s
	2h 3m 11s

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