Switch to "vX.Y.Z" tagging scheme

Previously we used tags like "1.109.0" and "py-1.109.0".
Since Python bindings are always released
at the same time as the core,
it is easier to use a single tag for them.

"v" prefix is added to make matching by "v*" easier
in CI and scripts.

python/pyproject.toml

@@ -44,8 +44,8 @@ deltachat = [
 
 [tool.setuptools_scm]
 root = ".."
-tag_regex = '^(?P<prefix>py-)?(?P<version>[^\+]+)(?P<suffix>.*)?$'
-git_describe_command = "git describe --dirty --tags --long --match py-*.*"
+tag_regex = '^(?P<prefix>v)?(?P<version>[^\+]+)(?P<suffix>.*)?$'
+git_describe_command = "git describe --dirty --tags --long --match v*.*"
 
 [tool.black]
 line-length = 120