refactor: add checknotnull on nullable values

Author: tommytroen

src/main/kotlin/no/nav/security/mock/oauth2/extensions/RecordedRequestExtensions.kt

@@ -4,4 +4,5 @@ import no.nav.security.mock.oauth2.http.OAuth2HttpRequest
 import okhttp3.mockwebserver.RecordedRequest
 
 fun RecordedRequest.asOAuth2HttpRequest(): OAuth2HttpRequest =
-    OAuth2HttpRequest(this.headers, this.method!!, this.requestUrl!!, this.body.copy().readUtf8())
+    OAuth2HttpRequest(this.headers, checkNotNull(this.method), checkNotNull(this.requestUrl), this.body.copy().readUtf8())
+