chore(signal-processing): Update demo image to use nifi 2.12.0 and jdbc postgres 42.7.13

Author: NickLarsenNZ

demos/signal-processing/Dockerfile-nifi

@@ -1,13 +1,13 @@
-FROM oci.stackable.tech/sdp/nifi:2.9.0-stackable0.0.0-dev
+FROM oci.stackable.tech/sdp/nifi:2.12.0-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 😬
 #
-# VERSION="42.7.10"
+# VERSION="42.7.13"
 # curl -O "https://jdbc.postgresql.org/download/postgresql-$VERSION.jar"
 # curl --fail -u "your_username" --upload-file "postgresql-$VERSION.jar" 'https://repo.stackable.tech/repository/misc/jdbc/'
 # rm "postgresql-$VERSION.jar"
 
 # IMPORTANT (@NickLarsenNZ): Changing this version requires a change in the NiFi template (DownloadAndWriteToDB.json)
-ARG DRIVER_VERSION="42.7.10"
+ARG DRIVER_VERSION="42.7.13"
 RUN curl --fail -o "/stackable/nifi/postgresql-$DRIVER_VERSION.jar" "https://repo.stackable.tech/repository/misc/jdbc/postgresql-$DRIVER_VERSION.jar"