fix(deps): update okio to v3.13.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.squareup.okio:okio-fakefilesystem	3.12.0 -> 3.13.0
com.squareup.okio:okio	3.12.0 -> 3.13.0

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Release Notes

square/okio (com.squareup.okio:okio-fakefilesystem)

v3.13.0

2025-06-13

• New: okio.Socket interface. This is a first step towards low-level streaming networking support
  for Kotlin/Multiplatform. This release provides two JVM-only implementations: asOkioSocket()
  adapts a java.net.Socket to our new interface, and inMemorySocketPair() returns a pair of
  mutually-connected sockets. We also anticipate that this interface will be a useful abstraction
  for proxies and tunnels.
• New: In-development snapshots are now published to the [Central Portal Snapshots repository].

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