chore(deps): update mongo docker tag to v8.2.7 (#1381)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

charts/splunk-connect-for-snmp/values.yaml

@@ -555,7 +555,7 @@ mongodb:
     timeout: 600
   image:
     repository: mongo
-    tag: "8.2.2"
+    tag: "8.2.7"
     pullPolicy: IfNotPresent
 
   auth: