chore(deps): bump typeorm from 0.3.11 to 0.3.20 (#161)

Bumps [typeorm](https://github.com/typeorm/typeorm) from 0.3.11 to 0.3.20.
- [Release notes](https://github.com/typeorm/typeorm/releases)
- [Changelog](https://github.com/typeorm/typeorm/blob/master/CHANGELOG.md)
- [Commits](typeorm/typeorm@0.3.11...0.3.20)

---
updated-dependencies:
- dependency-name: typeorm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -43,7 +43,7 @@
         "lodash": "^4.17.21",
         "pg": "^8.8.0",
         "type-graphql": "^1.1.1",
-        "typeorm": "^0.3.9"
+        "typeorm": "^0.3.20"
     },
     "devDependencies": {
         "@interlay/interbtc-types": "1.1.1",