Update release version to 3.1.1rc1

Millu · Millu · commit d3a94e58534a · 2023-09-08T15:27:22.000+10:00
diff --git a/invokeai/version/invokeai_version.py b/invokeai/version/invokeai_version.py
@@ -1 +1 @@
-__version__ = "3.1.0"
+__version__ = "3.1.1rc1"
