Ping event fails because not providing an installation

[gsmet]

When GitHub sends the ping event, it comes (or at least can come) without an installation id:

2022-09-26 12:21:11,037 ERROR [io.qua.ver.htt.run.QuarkusErrorHandler] (vert.x-eventloop-thread-1) HTTP Request to / failed, error id: ef176e9c-d003-41c5-bdb3-f5f9e87ee993-1: java.lang.IllegalStateException: Unable to extract installation id from payload
at io.quarkiverse.githubapp.runtime.Routes.extractInstallationId(Routes.java:153)
at io.quarkiverse.githubapp.runtime.Routes.handleRequest(Routes.java:103)
at io.quarkiverse.githubapp.runtime.Routes_RouteHandler_handleRequest_516ab5af9409426c5dbdf44ccd172a61ce906df9.invoke(Unknown Source)
at io.quarkus.vertx.web.runtime.RouteHandler.handle(RouteHandler.java:97)
at io.quarkus.vertx.web.runtime.RouteHandler.handle(RouteHandler.java:22)
at io.vertx.ext.web.impl.BlockingHandlerDecorator.lambda$handle$0(BlockingHandlerDecorator.java:48)
at io.vertx.core.impl.ContextBase.lambda$null$0(ContextBase.java:137)
at io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:264)
at io.vertx.core.impl.ContextBase.lambda$executeBlocking$1(ContextBase.java:135)
at io.quarkus.vertx.core.runtime.VertxCoreRecorder$14.runWith(VertxCoreRecorder.java:560)
at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2449)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1478)
at org.jboss.threads.DelegatingRunnable.run(DelegatingRunnable.java:29)
at org.jboss.threads.ThreadLocalResettingRunnable.run(ThreadLocalResettingRunnable.java:29)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:833)
at com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:705)
at com.oracle.svm.core.posix.thread.PosixPlatformThreads.pthreadStartRoutine(PosixPlatformThreads.java:202)

Payload being:

Request method: POST
Accept: */*
content-type: application/json
User-Agent: GitHub-Hookshot/3116550
X-GitHub-Delivery: 32aa9f50-3d89-11ed-9544-ad100184b97e
X-GitHub-Event: ping
X-GitHub-Hook-ID: 381399736
X-GitHub-Hook-Installation-Target-ID: 241626
X-GitHub-Hook-Installation-Target-Type: integration
X-Hub-Signature: sha1=...
X-Hub-Signature-256: sha256=...

Note that there might be other payloads not coming with an installation id so we should probably handle that somehow.