Bump to v7.3.0

Dockerfile

@@ -13,7 +13,7 @@ LABEL maintainer="Bjoern Kimminich <bjoern.kimminich@owasp.org>" \
       org.label-schema.url="http://owasp-juice.shop" \
       org.label-schema.usage="http://help.owasp-juice.shop" \
       org.label-schema.license="MIT" \
-      org.label-schema.version="7.3.0-SNAPSHOT" \
+      org.label-schema.version="7.3.0" \
       org.label-schema.docker.cmd="docker run --rm -p 3000:3000 bkimminich/juice-shop" \
       org.label-schema.docker.params="NODE_ENV=string name of the custom configuration,CTF_KEY=string key to hash challenges into CTF flag codes" \
       org.label-schema.vcs-url="https://github.com/bkimminich/juice-shop.git" \

app/package.json

 {
   "name": "juice-shop-angular",
-  "version": "7.3.0-SNAPSHOT",
+  "version": "7.3.0",
   "private": true,
   "dependencies": {
     "angular": "~1.6.9",

package.json

 {
   "name": "juice-shop",
-  "version": "7.3.0-SNAPSHOT",
+  "version": "7.3.0",
   "description": "An intentionally insecure JavaScript Web Application",
   "homepage": "http://owasp-juice.shop",
   "author": "Björn Kimminich <bjoern.kimminich@owasp.org> (https://www.owasp.org/index.php/User:Bjoern_Kimminich)",