bump version 2.9.0a12 -> 2.9.0

Author: tcompa

fractal_server/__init__.py

@@ -1 +1 @@
-__VERSION__ = "2.9.0a12"
+__VERSION__ = "2.9.0"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "fractal-server"
-version = "2.9.0a12"
+version = "2.9.0"
 description = "Server component of the Fractal analytics platform"
 authors = [
     "Tommaso Comparin <tommaso.comparin@exact-lab.it>",
@@ -85,7 +85,7 @@ filterwarnings = [
 ]
 
 [tool.bumpver]
-current_version = "2.9.0a12"
+current_version = "2.9.0"
 version_pattern = "MAJOR.MINOR.PATCH[PYTAGNUM]"
 commit_message = "bump version {old_version} -> {new_version}"
 commit = true