chore: @DataDog/asm-go owns appsec_test.go files

Author: RomainMuller

CODEOWNERS

@@ -19,6 +19,7 @@
 /contrib/envoyproxy             @DataDog/asm-go
 /contrib/haproxy                @DataDog/asm-go
 /contrib/k8s.io/gateway-api     @DataDog/asm-go
+/contrib/**/appsec_test.go      @DataDog/asm-go
 
 # capabilities - config, dynamic config, remote config
 /internal/env                        @DataDog/apm-sdk-capabilities-go