build(deps): update iai-callgrind requirement from 0.12.0 to 0.13.4

Updates the requirements on [iai-callgrind](https://github.com/iai-callgrind/iai-callgrind) to permit the latest version.
- [Release notes](https://github.com/iai-callgrind/iai-callgrind/releases)
- [Changelog](https://github.com/iai-callgrind/iai-callgrind/blob/main/CHANGELOG.md)
- [Commits](iai-callgrind/iai-callgrind@v0.12.0...v0.13.4)

---
updated-dependencies:
- dependency-name: iai-callgrind
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

lofty/Cargo.toml

@@ -37,7 +37,7 @@ hound     = { git = "https://github.com/ruuda/hound.git", rev = "02e66effb33683d
 structopt = { version = "0.3.26", default-features = false }
 tempfile  = "3.10.1"
 test-log = "0.2.16"
-iai-callgrind = "0.12.0"
+iai-callgrind = "0.13.4"
 
 [lints]
 workspace = true