Simplify release process

[acroca]

At the moment, when releasing a new version we need to push all the tags for the main dapr package and the ext packages. This is inconvenient for maintainers, as we have to do it manually every time and there's a risk of mistake.

I suggest we go with a single tag like v1.17.2, and that single tag would release everything at once. With this in place, we can even use the standard github release process, where we create a Release and it creates a tag automatically.