fix(deps): update dependency dotenv to v16.2.0 (#245)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [dotenv](https://togithub.com/motdotla/dotenv) | [`16.1.4` ->
`16.2.0`](https://renovatebot.com/diffs/npm/dotenv/16.1.4/16.2.0) |
[![age](https://badges.renovateapi.com/packages/npm/dotenv/16.2.0/age-slim)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://badges.renovateapi.com/packages/npm/dotenv/16.2.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://badges.renovateapi.com/packages/npm/dotenv/16.2.0/compatibility-slim/16.1.4)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://badges.renovateapi.com/packages/npm/dotenv/16.2.0/confidence-slim/16.1.4)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>motdotla/dotenv</summary>

###
[`v16.2.0`](https://togithub.com/motdotla/dotenv/blob/HEAD/CHANGELOG.md#&#8203;1620-httpsgithubcommotdotladotenvcomparev1614v1620-2023-06-15)

[Compare
Source](https://togithub.com/motdotla/dotenv/compare/v16.1.4...v16.2.0)

##### Added

- Optionally write to your own target object rather than `process.env`.
Defaults to `process.env`.
[#&#8203;753](https://togithub.com/motdotla/dotenv/pull/753)
- Add import type URL to types file
[#&#8203;751](https://togithub.com/motdotla/dotenv/pull/751)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://app.renovatebot.com/dashboard#github/UK-Export-Finance/mdm-api).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNS4xMTcuMyIsInVwZGF0ZWRJblZlciI6IjM1LjExNy4zIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>