deps: update Functions Framework Invoker dependency to 2.0.1 (GoogleCloudPlatform#385)

Author: akerekes

function-maven-plugin/pom.xml

@@ -75,7 +75,7 @@
     <dependency>
       <groupId>com.google.cloud.functions.invoker</groupId>
       <artifactId>java-function-invoker</artifactId>
-      <version>2.0.0</version>
+      <version>2.0.1</version>
     </dependency>
 
     <dependency>