Add vue-template-compiler in matching version

Signed-off-by: Julius Härtl <jus@bitgrid.net>

Author: juliusknorr

apps/viewer/apps/viewer/package-lock.json

@@ -79,6 +79,7 @@
     "cypress-visual-regression": "^1.7.0",
     "eslint-plugin-cypress": "^2.12.1",
     "jest": "^28.1.3",
+    "vue-template-compiler": "^2.7.8",
     "wait-on": "^6.0.1"
   }
 }