bump version 2.17.0a3 -> 2.17.0a4

Author: tcompa

fractal_server/__init__.py

@@ -1 +1 @@
-__VERSION__ = "2.17.0a3"
+__VERSION__ = "2.17.0a4"

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "fractal-server"
-version = "2.17.0a3"
+version = "2.17.0a4"
 description = "Backend component of the Fractal analytics platform"
 authors = [
     { name="Tommaso Comparin", email="[email protected]" },
@@ -96,7 +96,7 @@ filterwarnings = [
 markers = ["container", "ssh", "fails_on_macos"]
 
 [tool.bumpver]
-current_version = "2.17.0a3"
+current_version = "2.17.0a4"
 version_pattern = "MAJOR.MINOR.PATCH[PYTAGNUM]"
 commit_message = "bump version {old_version} -> {new_version}"
 commit = true