swupdate: bump to revision 235b16e

This includes the following changes:

235b16e README: use badge from Gitlab pipeline
7407c82 ucfw: drop support for old libgpiod
c36e703 Add .gitignore and .flake8 to example client
26cdd7f Update license identifiers in example client
a8cbfbd diskpart: fix context memory leak in hybrid mode
18f69e4 suricatta: separate ipc into separate thread
8a01261 channel_curl: add separate error codes for SSL
b137cb9 doc: add description for hawkBit server status
a61b0e6 gitignore: add tools/swupdate-gethawkbitstatus
bc317f4 tools: add trigger to swupdate-hawkbitcfg
ec39522 tools: add swupdate-gethawkbitstatus
6f28f69 suricatta: add basic status request
5558bbd util: add optional swupdate_time_iso8601 param
5502546 Add Pipfile and README.md
e1a43e8 Improve example client
b367c0b Rename swupdate-client.py to swupdate_client.py
8f3371c channel_curl: keep retrying file download after connection lost
146726e Fix memory leak in boot handler
2a5b2a8 doc: specify valid version range in sw-description.rst
de64a76 compare_versions: remove useless else statement
637a1eb archive_handler: fail update on more archive errors

Signed-off-by: Pierre-Jean Texier <texier.pj2@gmail.com>

recipes-support/swupdate/swupdate_git.bb

@@ -2,7 +2,7 @@ require swupdate.inc
 
 DEFAULT_PREFERENCE = "-1"
 
-SRCREV ?= "e1df95fa64a205b8a0abf7a30003f554e471c5ed"
+SRCREV ?= "235b16e22c79b095723f82c26945323ae94f3acc"
 PV = "2021.04+git${SRCPV}"
 
 LIC_FILES_CHKSUM = "file://LICENSES/GPL-2.0-only.txt;md5=4ee23c52855c222cba72583d301d2338 \