fix(deps): update dependency io-ts to v2.2.21 (#994)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [io-ts](https://togithub.com/gcanti/io-ts) | [`2.2.16` ->
`2.2.21`](https://renovatebot.com/diffs/npm/io-ts/2.2.16/2.2.21) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/io-ts/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/io-ts/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/io-ts/2.2.16/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/io-ts/2.2.16/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>gcanti/io-ts (io-ts)</summary>

###
[`v2.2.21`](https://togithub.com/gcanti/io-ts/blob/HEAD/CHANGELOG.md#2221)

[Compare
Source](https://togithub.com/gcanti/io-ts/compare/2.2.20...0a0b0c3a4e8f88b00a4825586fb661ceef58e659)

-   **Bug Fix**
- Handle `record` keys outside `domain`,
[#&#8203;705](https://togithub.com/gcanti/io-ts/issues/705)
([@&#8203;tgfisher4](https://togithub.com/tgfisher4))

###
[`v2.2.20`](https://togithub.com/gcanti/io-ts/blob/HEAD/CHANGELOG.md#2220)

[Compare
Source](https://togithub.com/gcanti/io-ts/compare/2.2.19...2.2.20)

-   undeprecate `FunctionType`, `FunctionC`, `Function`
-   undeprecate `NeverType`, `NeverC`, `never`
-   undeprecate `AnyType`, `AnyC`, `any`
-   undeprecate `RefinementC`, `refinement`, `Integer`
- add refinement overload to allow custom branding, closes
[#&#8203;373](https://togithub.com/gcanti/io-ts/issues/373)

###
[`v2.2.19`](https://togithub.com/gcanti/io-ts/blob/HEAD/CHANGELOG.md#2219)

[Compare
Source](https://togithub.com/gcanti/io-ts/compare/2.2.18...2.2.19)

-   **Bug Fix**
- allow `Error` to be decoded with `UnknownRecord`,
[#&#8203;664](https://togithub.com/gcanti/io-ts/issues/664)
([@&#8203;mlegenhausen](https://togithub.com/mlegenhausen))

###
[`v2.2.18`](https://togithub.com/gcanti/io-ts/blob/HEAD/CHANGELOG.md#2218)

[Compare
Source](https://togithub.com/gcanti/io-ts/compare/2.2.17...2.2.18)

-   **Bug Fix**
- fix `[email protected]` errors, closes
[#&#8203;656](https://togithub.com/gcanti/io-ts/issues/656), closes
[#&#8203;647](https://togithub.com/gcanti/io-ts/issues/647)
([@&#8203;gcanti](https://togithub.com/gcanti))

###
[`v2.2.17`](https://togithub.com/gcanti/io-ts/blob/HEAD/CHANGELOG.md#2217)

[Compare
Source](https://togithub.com/gcanti/io-ts/compare/2.2.16...2.2.17)

-   **Bug Fix**
- Don't throw a TypeError when trying to decode a sum value that
contains a dangerous string,
[#&#8203;650](https://togithub.com/gcanti/io-ts/issues/650)
([@&#8203;thewilkybarkid](https://togithub.com/thewilkybarkid))

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package.json

@@ -37,7 +37,7 @@
     "client-oauth2": "4.3.3",
     "fp-ts": "2.12.1",
     "http-status-codes": "2.2.0",
-    "io-ts": "2.2.16",
+    "io-ts": "2.2.21",
     "io-ts-promise": "2.0.2",
     "io-ts-reporters": "1.2.2",
     "io-ts-types": "0.5.16",