chore: add missing luxon types

Signed-off-by: Niek te Grootenhuis <niek.te.grootenhuis@alliander.com>

plugins/tech-insights-backend/package.json

@@ -43,6 +43,7 @@
     "@backstage/plugin-tech-insights-common": "^0.2.6",
     "@backstage/plugin-tech-insights-node": "^0.3.3",
     "@types/express": "^4.17.6",
+    "@types/luxon": "^3.0.0",
     "express": "^4.17.1",
     "express-promise-router": "^4.1.0",
     "knex": "^2.0.0",
@@ -56,8 +57,8 @@
   "devDependencies": {
     "@backstage/backend-test-utils": "^0.1.27",
     "@backstage/cli": "^0.18.1",
-    "@types/supertest": "^2.0.8",
     "@types/semver": "^7.3.8",
+    "@types/supertest": "^2.0.8",
     "supertest": "^6.1.3",
     "wait-for-expect": "^3.0.2"
   },