chore(deps): bump souvlaki from 0.7.3 to 0.8.3 in /src-tauri

Bumps [souvlaki](https://github.com/Sinono3/souvlaki) from 0.7.3 to 0.8.3.
- [Release notes](https://github.com/Sinono3/souvlaki/releases)
- [Changelog](https://github.com/Sinono3/souvlaki/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Sinono3/souvlaki/compare/0.7.3...0.8.3)

---
updated-dependencies:
- dependency-name: souvlaki
  dependency-version: 0.8.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

src-tauri/Cargo.lock

@@ -5880,10 +5880,11 @@ dependencies = [
 
 [[package]]
 name = "souvlaki"
-version = "0.7.3"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea4544ba17df4ac03d6503ae8abba19adad3ae89203a425945dc4c12d7790bfa"
+checksum = "5855c8f31521af07d896b852eaa9eca974ddd3211fc2ae292e58dda8eb129bc8"
 dependencies = [
+ "base64 0.22.1",
  "block",
  "cocoa",
  "core-graphics 0.22.3",

src-tauri/Cargo.toml

@@ -91,7 +91,7 @@ spectrum-analyzer = "1.5"
 ebur128 = "0.1"
 
 # Media controls (MPRIS on Linux)
-souvlaki = "0.7"
+souvlaki = "0.8"
 
 # Desktop notifications → ashpd in [target.linux] deps below