Bump lz4_flex from 0.11.5 to 0.11.6 in /pixie-server

Bumps [lz4_flex](https://github.com/pseitz/lz4_flex) from 0.11.5 to 0.11.6.
- [Release notes](https://github.com/pseitz/lz4_flex/releases)
- [Changelog](https://github.com/PSeitz/lz4_flex/blob/main/CHANGELOG.md)
- [Commits](PSeitz/lz4_flex@0.11.5...0.11.6)

---
updated-dependencies:
- dependency-name: lz4_flex
  dependency-version: 0.11.6
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pixie-server/Cargo.lock

@@ -29,7 +29,7 @@ futures = "0.3.32"
 tokio-stream = { version = "0.1.18", features = ["sync"] }
 chrono = "0.4.44"
 tokio-util = "0.7.18"
-lz4_flex = "0.11.5"
+lz4_flex = "0.11.6"
 
 [dependencies.pixie-shared]
 path = "../pixie-shared"