Bump tokio from 1.44.2 to 1.48.0 in /pixie-server

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.44.2 to 1.48.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.44.2...tokio-1.48.0)

---
updated-dependencies:
- dependency-name: tokio
  dependency-version: 1.48.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pixie-server/Cargo.lock

@@ -17,7 +17,7 @@ postcard = { version = "1.1.3", default-features = false, features = ["alloc"] }
 serde = "1.0.228"
 serde_derive = "1.0.193"
 serde_yaml = "0.9"
-tokio = { version = "1.44.2", features = ["macros", "fs", "rt-multi-thread", "sync", "signal"] }
+tokio = { version = "1.48.0", features = ["macros", "fs", "rt-multi-thread", "sync", "signal"] }
 serde_json = "1.0.145"
 hostfile = "1.1.1"
 hex = "0.4.3"