Update dev version to 1.6.0+dev (#15671)

Created the [release-1.5 branch](https://github.com/python/mypy/tree/release-1.5), updating version
python · Jul 14, 2023 · 211d742 · 211d742
1 parent 7a94183
commit 211d742
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mypy/version.py b/mypy/version.py
@@ -8,7 +8,7 @@
 # - Release versions have the form "1.2.3".
 # - Dev versions have the form "1.2.3+dev" (PLUS sign to conform to PEP 440).
 # - Before 1.0 we had the form "0.NNN".
-__version__ = "1.5.0+dev"
+__version__ = "1.6.0+dev"
 base_version = __version__
 
 mypy_dir = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))