Change semver to be valid (#660)

Semver needs to not have leading zeroes; this updates the package.json
to account for that.

---------

Co-authored-by: Barb Cutler <[email protected]>

Author: micpap25

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@submitty/pdf-annotate.js",
-  "version": "24.06.02",
+  "version": "24.6.4",
   "description": "Annotation layer for pdf.js",
   "main": "index.js",
   "types": "types",