Bump knex from 0.95.15 to 2.5.1 in /e2e

Bumps [knex](https://github.com/knex/knex) from 0.95.15 to 2.5.1.
- [Release notes](https://github.com/knex/knex/releases)
- [Changelog](https://github.com/knex/knex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/knex/knex/commits/2.5.1)

---
updated-dependencies:
- dependency-name: knex
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

e2e/package.json

@@ -26,7 +26,7 @@
     "eslint": "^7.31.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-prettier": "^3.4.0",
-    "knex": "^0.95.4",
+    "knex": "^2.5.1",
     "pg": "^8.6.0",
     "prettier": "^2.3.2",
     "typescript": "^4.3.5"