build: use conventional commit message for bumpversion

Author: mariobuikhuizen

.bumpversion.cfg

@@ -1,6 +1,7 @@
 [bumpversion]
 current_version = 1.9.2
 commit = True
+message = "chore: bump version: {current_version} → {new_version}"
 tag = True
 parse = (?P<major>\d+)(\.(?P<minor>\d+))(\.(?P<patch>\d+))((?P<release>.)(?P<build>\d+))?
 serialize =