Update okio to v3.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.squareup.okio:okio-fakefilesystem	3.3.0 -> 3.4.0
com.squareup.okio:okio	3.3.0 -> 3.4.0

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Release Notes

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

v3.4.0

2023-07-07

• New: Adapt a Java NIO FileSystem (java.nio.file.FileSystem) as an Okio FileSystem using
  fileSystem.asOkioFileSystem().
• New: Adapt Android’s AssetManager as an Okio FileSystem using AssetFileSystem. This is in the
  new okio-assetfilesystem module. Android applications should prefer this over
  FileSystem.RESOURCES as it’s faster to load.
• Fix: Don't crash decoding GZIP files when the optional extra data (XLEN) is 32 KiB or larger.
• Fix: Resolve symlinks in FakeFileSystem.canonicalize().
• Fix: Report the correct createdAtMillis in NodeJsFileSystem file metadata. We were
  incorrectly using ctimeMs, where c means changed, not created.
• Fix: UnsafeCursor is now Closeable.

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[JakeWharton]

Fuck that flaky test!