chore(deps): bump shank from 0.4.7 to 0.4.8 (#536)

Bumps [shank](https://github.com/metaplex-foundation/shank) from 0.4.7 to 0.4.8.
- [Changelog](https://github.com/metaplex-foundation/shank/blob/master/release.toml)
- [Commits](https://github.com/metaplex-foundation/shank/commits)

---
updated-dependencies:
- dependency-name: shank
  dependency-version: 0.4.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -15,7 +15,7 @@ custom-panic = []
 
 [dependencies]
 borsh = "0.9"
-shank = "0.4.7"
+shank = "0.4.8"
 solana-program = "2.1"
 
 [lints.rust]