doc: release: 3.3: Mention removal of tinycbor module
Adds tinycbor removal to the release notes and suggets updating
to use zcbor.
@@ -83,6 +83,9 @@ Removed APIs in this release
* Removed :kconfig:option:`CONFIG_COUNTER_RTC_STM32_BACKUP_DOMAIN_RESET`
+* Removed deprecated tinycbor module, code that uses this module should be
+ updated to use zcbor as a replacement.
+
Deprecated in this release
==========================
