chore(deps): update dependency testableio.system.io.abstractions to v…

…20.0.4 (#433)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[TestableIO.System.IO.Abstractions](https://togithub.com/TestableIO/System.IO.Abstractions)
| `20.0.1` -> `20.0.4` |
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|
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|
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|
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|

---

### Release Notes

<details>
<summary>TestableIO/System.IO.Abstractions
(TestableIO.System.IO.Abstractions)</summary>

###
[`v20.0.4`](https://togithub.com/TestableIO/System.IO.Abstractions/releases/tag/v20.0.4)

##### What's Changed

- refactor: update supported frameworks by
[@&#8203;vbreuss](https://togithub.com/vbreuss) in
[https://github.com/TestableIO/System.IO.Abstractions/pull/1060](https://togithub.com/TestableIO/System.IO.Abstractions/pull/1060)
- fix(ci): make push step idempotent by
[@&#8203;fgreinacher](https://togithub.com/fgreinacher) in
[https://github.com/TestableIO/System.IO.Abstractions/pull/1062](https://togithub.com/TestableIO/System.IO.Abstractions/pull/1062)
- fix: combine ci and release workflows by
[@&#8203;fgreinacher](https://togithub.com/fgreinacher) in
[https://github.com/TestableIO/System.IO.Abstractions/pull/1063](https://togithub.com/TestableIO/System.IO.Abstractions/pull/1063)
- fix: use correct release commenter version by
[@&#8203;fgreinacher](https://togithub.com/fgreinacher) in
[https://github.com/TestableIO/System.IO.Abstractions/pull/1064](https://togithub.com/TestableIO/System.IO.Abstractions/pull/1064)

**Full Changelog**:
TestableIO/System.IO.Abstractions@v19.2.91...v20.0.4

</details>

---

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Directory.Packages.props

@@ -7,7 +7,7 @@
 	<ItemGroup>
 		<PackageVersion Include="System.Linq.Async" Version="6.0.1" />
 		<PackageVersion Include="System.Threading.Channels" Version="8.0.0" />
-		<PackageVersion Include="TestableIO.System.IO.Abstractions" Version="20.0.1" />
+		<PackageVersion Include="TestableIO.System.IO.Abstractions" Version="20.0.4" />
 		<PackageVersion Include="System.IO.Compression" Version="4.3.0" />
 		<PackageVersion Include="System.IO.FileSystem.AccessControl" Version="5.0.0" />
 	</ItemGroup>