quarkus-amazon-lambda-rest NullPointer on startup (native only)

[fastluca]

Describe the bug

I migrated two different working projects from quarkus version 2.2.3.Final to 2.3.0.Final. Both are using quarkus-amazon-lambda-rest extension and both now are not workig, due to a NullPointer exception on Lambda startup.

Expected behavior

The application starts and works normally.

Actual behavior

NullPointerException on lambda invocation.
{"timestamp":"2021-10-11T14:58:12.213Z","sequence":4741,"loggerClassName":"org.jboss.logging.Logger","loggerName":"io.quarkus.amazon.lambda.runtime.AbstractLambdaPollLoop","level":"ERROR","message":"Failed to run lambda (NORMAL)","threadName":"Lambda Thread (NORMAL)","threadId":29,"hostName":"1a74caf611c9","processName":"NativeImageGeneratorRunner$JDK9Plus","processId":71,"stackTrace":"java.lang.NullPointerException\n\tat io.quarkus.amazon.lambda.runtime.AmazonLambdaRecorder$1.processRequest(AmazonLambdaRecorder.java:155)\n\tat io.quarkus.amazon.lambda.runtime.AbstractLambdaPollLoop$1.run(AbstractLambdaPollLoop.java:124)\n\tat java.lang.Thread.run(Thread.java:829)\n\tat com.oracle.svm.core.thread.JavaThreads.threadStartRoutine(JavaThreads.java:567)\n\tat com.oracle.svm.core.posix.thread.PosixJavaThreads.pthreadStartRoutine(PosixJavaThreads.java:192)\n"}

How to Reproduce?

No response

Output of uname -a or ver

No response

Output of java -version

openjdk version "11.0.12" 2021-07-20

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.3.o.Final

Build tool (ie. output of mvnw --version or gradlew --version)

No response

Additional information

No response

[quarkus-bot]

/cc @matejvasek, @patriot1burke