fix: upgrade xlsx from 0.17.5 to 0.18.5

Snyk has created this PR to upgrade xlsx from 0.17.5 to 0.18.5.

See this package in npm:
https://www.npmjs.com/package/xlsx

See this project in Snyk:
https://app.snyk.io/org/renatamuellerc2c/project/db6d34a8-3256-44b7-9ed6-dd51d71c7afe?utm_source=github&utm_medium=referral&page=upgrade-pr

package/package.json

@@ -71,6 +71,6 @@
     "tslib": "^2.3.0",
     "typeorm": "^0.3.14",
     "whatwg-fetch": "^3.6.2",
-    "xlsx": "^0.17.3"
+    "xlsx": "^0.18.5"
   }
 }