chore: Bump custom NiFi image to 2.9.0

Author: Techassi

.github/workflows/dev_nifi.yaml

@@ -25,5 +25,5 @@ jobs:
       image-name: nifi
       # TODO (@NickLarsenNZ): Use a versioned image with stackable0.0.0-dev or stackableXX.X.X so that
       # the demo is reproducable for the release and it will be automatically replaced for the release branch.
-      image-version: 2.7.2-postgresql
+      image-version: 2.9.0-postgresql
       containerfile-path: demos/signal-processing/Dockerfile-nifi

demos/signal-processing/Dockerfile-nifi

@@ -1,4 +1,4 @@
-FROM oci.stackable.tech/sdp/nifi:2.7.2-stackable0.0.0-dev
+FROM oci.stackable.tech/sdp/nifi:2.9.0-stackable0.0.0-dev
 
 # This is the postgresql JDBC driver from https://jdbc.postgresql.org/download/
 # There appear to be no signatures to validate against 😬

stacks/signal-processing/nifi.yaml

@@ -8,7 +8,7 @@ spec:
     productVersion: 2.9.0
     # TODO (@NickLarsenNZ): Use a versioned image with stackable0.0.0-dev or stackableXX.X.X so that
     # the demo is reproducable for the release and it will be automatically replaced for the release branch.
-    custom: oci.stackable.tech/demos/nifi:2.7.2-postgresql
+    custom: oci.stackable.tech/demos/nifi:2.9.0-postgresql
     # pullPolicy: IfNotPresent
   clusterConfig:
     authentication: