bitbake: bitbake: Bump to version 2.3.1

So that OE-Core can depend on bb.event.check_for_interrupts(), bump our
verison number to a development series version.

(Bitbake rev: dea1b2f3fc31f28daed5da16e62da8895d6e5716)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/bitbake

@@ -27,7 +27,7 @@ from bb.main import bitbake_main, BitBakeConfigParameters, BBMainException
 
 bb.utils.check_system_locale()
 
-__version__ = "2.2.0"
+__version__ = "2.3.1"
 
 if __name__ == "__main__":
     if __version__ != bb.__version__:

bitbake/lib/bb/__init__.py

@@ -9,7 +9,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 #
 
-__version__ = "2.2.0"
+__version__ = "2.3.1"
 
 import sys
 if sys.version_info < (3, 8, 0):