module-info.java: Open identifiers for reflection.

Author: hikingc

src/main/java/module-info.java

@@ -12,7 +12,7 @@
   requires tools.jackson.core;
   requires tools.jackson.databind;
   exports io.github.hikingc.matrixsdk.services.utils.deserializers to tools.jackson.databind;
-
+  opens io.github.hikingc.matrixsdk.api.identifiers to tools.jackson.databind;
 
   // Logging
   requires org.slf4j;