micropython: update submodule

dlech · dlech · commit bed9ab71f1fa · 2021-07-06T09:08:18.000-05:00
This pulls in a fix to ensure that MICROPY_GIT_TAG contains the tag
name from the pybricks-micropython repo.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -25,6 +25,7 @@
 ### Fixed
 - Fix Bluetooth not disconnecting when shutting down and button is still pressed.
 - Fix I/O ports not powering off when shutting down and button is still pressed.
+- Fix version number only showing git hash and not v3.x.
 
 ## [3.1.0a1] - 2021-06-23
 
diff --git a/micropython b/micropython
@@ -1 +1 @@
-Subproject commit 344c146c7a0295a7ea63e936987822973305706e
+Subproject commit 981d63475983ebf1fed2e9ba5b4bf019a62f9895
