Update splunk/splunk Docker tag to v9.3.2

splunk/deployment.yaml

@@ -17,7 +17,7 @@ spec:
         app: splunk
     spec:
       containers:
-      - image: splunk/splunk:9.0.4@sha256:393160e2cc34eaf8ba2de279211ebd9c7a32b8d9fdbc81680988aa7aef35ef41
+      - image: splunk/splunk:9.3.2@sha256:5b4bdeb96ccf53f9bb7f9f33529a4cb0b77f5e11946ac4068a617ceea8d9fe4e
         name: splunk
         env:
         - name: SPLUNK_START_ARGS