Missing "Artifacts" from uber jar using IntelliJ / Maven - maven

Question

I am developing a Flink application, and I'm very new to building Java applications.
I am using IntelliJ 2022.2.3 Community Edition, and Maven for dependency management.
I have the following dependencies in my POM file:
<!-- https://mvnrepository.com/artifact/com.amazonaws/amazon-sqs-java-messaging-lib -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>amazon-sqs-java-messaging-lib</artifactId>
<version>2.0.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.5.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-kinesisanalytics-runtime -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-kinesisanalytics-runtime</artifactId>
<version>1.2.0</version>
</dependency>
When I build the artifact and view its contents, I notice that some of the dependancies are included, and others are missing. I expect to see the postgressql drivers at org/postgressql/... but that folder does not exist.
I have a copy of the project where the artifacts folder does contain the expected folders and when I look at the project settings/artifacts/output layout view, the postgres jars are in the list, but not in my problem project?
I read How can I create an executable/runnable JAR with dependencies using Maven? and i don't have that section in the POM, but in my case as I mentioned the 2 projects I have seem to have different artifacts missing from the jar?
Sorry for my lack of correct terminology.
UPDATE:
I should add this section is in my POM
<!-- We use the maven-shade plugin to create a fat jar that contains all necessary dependencies. -->
<!-- Change the value of <mainClass>...</mainClass> if your program entry point changes. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
<executions>
<!-- Run shade goal on package phase -->
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<artifactSet>
<excludes>
<exclude>org.apache.flink:flink-shaded-force-shading</exclude>
<exclude>com.google.code.findbugs:jsr305</exclude>
<exclude>org.slf4j:*</exclude>
<exclude>org.apache.logging.log4j:*</exclude>
</excludes>
</artifactSet>
<filters>
<filter>
<!-- Do not copy the signatures in the META-INF folder.
Otherwise, this might cause SecurityExceptions when using the JAR. -->
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>vendor.flink.StreamProcessingNoJoin</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>