Prepare for next version (kiali#522)

* Release v1.50.0

* Prepare for next version

Co-authored-by: kiali-bot <[email protected]>

Author: github-actions[bot]

Makefile

@@ -9,7 +9,7 @@ OUTDIR=${ROOTDIR}/_output
 TARGET_ARCHS ?= amd64 arm64 s390x ppc64le
 
 # Identifies the current build.
-VERSION ?= v1.50.0-SNAPSHOT
+VERSION ?= v1.51.0-SNAPSHOT
 COMMIT_HASH ?= $(shell git rev-parse HEAD)
 
 # Identifies the Kiali operator container image that will be built