chore(deps): update dependency tunit to 1.6.20 (#309)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [TUnit](https://redirect.github.com/thomhurst/TUnit) | `1.6.5` ->
`1.6.20` |
![age](https://developer.mend.io/api/mc/badges/age/nuget/TUnit/1.6.20?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/TUnit/1.6.5/1.6.20?slim=true)
|

---

### Release Notes

<details>
<summary>thomhurst/TUnit (TUnit)</summary>

###
[`v1.6.20`](https://redirect.github.com/thomhurst/TUnit/releases/tag/v1.6.20):
1.6.20

<!-- Release notes generated using configuration in .github/release.yml
at v1.6.20 -->

#### What's Changed

##### Other Changes

- feat: enhance assertion exception messages to include inline 'because'
reasons by [@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4142](https://redirect.github.com/thomhurst/TUnit/pull/4142)
- feat: Fix MatrixMethod attribute ignored for enum parameter type by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4146](https://redirect.github.com/thomhurst/TUnit/pull/4146)

##### Dependencies

- chore(deps): update tunit to 1.6.15 by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4143](https://redirect.github.com/thomhurst/TUnit/pull/4143)

**Full Changelog**:
<thomhurst/TUnit@v1.6.15...v1.6.20>

###
[`v1.6.15`](https://redirect.github.com/thomhurst/TUnit/releases/tag/v1.6.15):
1.6.15

<!-- Release notes generated using configuration in .github/release.yml
at v1.6.15 -->

#### What's Changed

##### Other Changes

- Enhance DefaultLogger with extensibility features by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4131](https://redirect.github.com/thomhurst/TUnit/pull/4131)
- perf: remove unnecessary manual `string.Replace` code. by
[@&#8203;TimothyMakkison](https://redirect.github.com/TimothyMakkison)
in [#&#8203;4134](https://redirect.github.com/thomhurst/TUnit/pull/4134)
- feat: enhance failure messages for All assertions to include value by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4139](https://redirect.github.com/thomhurst/TUnit/pull/4139)
- More Robust Global Timeout Cancellation by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4140](https://redirect.github.com/thomhurst/TUnit/pull/4140)
- feat: add custom predicate support for equivalency assertions using
FuncEqualityComparer by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4141](https://redirect.github.com/thomhurst/TUnit/pull/4141)
- TUnit.AspNetCore Analyzers by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4138](https://redirect.github.com/thomhurst/TUnit/pull/4138)

##### Dependencies

- chore(deps): update tunit to 1.6.5 by
[@&#8203;thomhurst](https://redirect.github.com/thomhurst) in
[#&#8203;4133](https://redirect.github.com/thomhurst/TUnit/pull/4133)

#### New Contributors

- [@&#8203;TimothyMakkison](https://redirect.github.com/TimothyMakkison)
made their first contribution in
[#&#8203;4134](https://redirect.github.com/thomhurst/TUnit/pull/4134)

**Full Changelog**:
<thomhurst/TUnit@v1.6.5...v1.6.15>

</details>

---

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Directory.Packages.props

@@ -40,7 +40,7 @@
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     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
     <PackageVersion Include="Testcontainers.MsSql" Version="4.9.0" />
-    <PackageVersion Include="TUnit" Version="1.6.5" />
+    <PackageVersion Include="TUnit" Version="1.6.20" />
     <PackageVersion Include="Verify.TUnit" Version="31.9.0" />
   </ItemGroup>
 </Project>