Fixed #1 - Fixed the whatsnew-** script for loading release notes into builds

Added test to ensure that release notes are parsed properly
Updated to latest dependencies to fix security vulnerability
Updated GH Actions Workflow to run test before updating tag
Updated README.md to reflect proper whatsnew documentation.

node_modules/jest-mock/build/index.js

@@ -845,14 +845,20 @@ class ModuleMockerClass {
             this._typeOf(original) +
             ' given instead'
         );
-      } // @ts-ignore overriding original method with a Mock
+      }
+
+      const isMethodOwner = object.hasOwnProperty(methodName); // @ts-ignore overriding original method with a Mock
 
       object[methodName] = this._makeComponent(
         {
           type: 'function'
         },
         () => {
-          object[methodName] = original;
+          if (isMethodOwner) {
+            object[methodName] = original;
+          } else {
+            delete object[methodName];
+          }
         }
       ); // @ts-ignore original method is now a Mock
 
@@ -914,13 +920,14 @@ class ModuleMockerClass {
             this._typeOf(original) +
             ' given instead'
         );
-      }
+      } // @ts-ignore: mock is assignable
 
       descriptor[accessType] = this._makeComponent(
         {
           type: 'function'
         },
         () => {
+          // @ts-ignore: mock is assignable
           descriptor[accessType] = original;
           Object.defineProperty(obj, propertyName, descriptor);
         }