Pinned depencencies (and bumped some)

ref #36

package.json

@@ -39,24 +39,24 @@
   ],
   "license": "CC-BY-NC-SA-4.0",
   "dependencies": {
-    "@odit/class-validator-jsonschema": "^2.1.1",
-    "async-helpers": "^0.3.17",
-    "axios": "^0.21.1",
-    "bwip-js": "^2.0.12",
-    "cheerio": "^1.0.0-rc.5",
+    "@odit/class-validator-jsonschema": "2.1.1",
+    "async-helpers": "0.3.17",
+    "axios": "0.21.1",
+    "bwip-js": "2.1.1",
+    "cheerio": "1.0.0-rc.5",
     "class-transformer": "0.3.1",
-    "class-validator": "^0.13.1",
-    "consola": "^2.15.0",
-    "cors": "^2.8.5",
-    "dotenv": "^8.2.0",
-    "express": "^4.17.1",
-    "handlebars": "^4.7.6",
-    "i18next": "^19.8.7",
-    "i18next-fs-backend": "^1.0.8",
-    "mime-types": "^2.1.28",
-    "pdf-lib": "^1.16.0",
-    "puppeteer": "^7.0.1",
-    "reflect-metadata": "^0.1.13",
+    "class-validator": "0.13.1",
+    "consola": "2.15.3",
+    "cors": "2.8.5",
+    "dotenv": "8.2.0",
+    "express": "4.17.1",
+    "handlebars": "4.7.7",
+    "i18next": "20.1.0",
+    "i18next-fs-backend": "1.1.1",
+    "mime-types": "2.1.29",
+    "pdf-lib": "1.16.0",
+    "puppeteer": "8.0.0",
+    "reflect-metadata": "0.1.13",
     "routing-controllers": "0.9.0-alpha.6",
     "routing-controllers-openapi": "2.2.0"
   },