updating build syntax for non java 8

Author: jdoherty

.github/workflows/pr_build.yml

@@ -69,7 +69,7 @@ jobs:
         if: ${{ matrix.java == '8' }} # If 8 exclude the examples directory
         run: mvn -B install --file pom.xml -pl '!software.amazon.lambda.examples:powertools-examples-idempotency,!software.amazon.lambda.examples:powertools-examples-batch,!software.amazon.lambda.examples:powertools-examples-cloudformation,!software.amazon.lambda.examples:powertools-examples-core-utilities-cdk,!software.amazon.lambda.examples:powertools-examples-core-utilities-sam,!software.amazon.lambda.examples:powertools-examples-core-utilities-serverless,!software.amazon.lambda.examples:powertools-examples-core-utilities-terraform,!software.amazon.lambda.examples:powertools-examples-parameters,!software.amazon.lambda.examples:powertools-examples-serialization,!software.amazon.lambda.examples:powertools-examples-validation,!software.amazon.lambda.examples:cdk,!software.amazon.lambda:powertools-examples'
       - name: Build with Maven
-        if: ${{ ! matrix.java == '8' }} # If not 8 don't exclude the examples directory
+        if: ${{  matrix.java != '8' }} # If not 8 don't exclude the examples directory
         run: mvn -B install --file pom.xml
       - name: Build Gradle Example - Java
         if: ${{ matrix.java == '8' }} # Gradle example can only be built on Java 8