Update okio to v3.9.1 (#1648)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[com.squareup.okio:okio-fakefilesystem](https://redirect.github.com/square/okio)
| dependencies | patch | `3.9.0` -> `3.9.1` |
| [com.squareup.okio:okio](https://redirect.github.com/square/okio) |
dependencies | patch | `3.9.0` -> `3.9.1` |

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### Release Notes

<details>
<summary>square/okio (com.squareup.okio:okio-fakefilesystem)</summary>

###
[`v3.9.1`](https://redirect.github.com/square/okio/blob/HEAD/CHANGELOG.md#Version-391)

*2024-09-12*

- Fix: Support paths containing a single dot (".") in `Path.relativeTo`.
- Fix: Do not read from the upstream source when a 0-byte read is
requested.
- Fix: Update kotlinx.datetime to 0.6.0 to correct a Gradle module
metadata problem with 0.5.0.
Note: this artifact is only used in 'okio-fakefilesystem' and
'okio-nodefilesystem' and not in the Okio core.

</details>

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gradle/libs.versions.toml

@@ -41,7 +41,7 @@ mavenPublish = "0.29.0"
 molecule = "2.0.0"
 mosaic = "0.12.0"
 okhttp = "5.0.0-alpha.14"
-okio = "3.9.0"
+okio = "3.9.1"
 paparazzi = "1.3.4"
 picnic = "0.7.0"
 robolectric = "4.13"