fix(example): fix broken example due to multiple versions of fastrace

[YangchenYe323]

The logging example is currently not working because we pull in logforth, which pulls in a different copy of fastrace from crates.io. This fixed it, and I believe it doesn't affect the publishing crates..

cargo tree -i fastrace@0.7.9
fastrace v0.7.9
└── logforth v0.24.0
    [dev-dependencies]
    └── example v0.0.0
cargo tree -i fastrace@0.7.17
fastrace v0.7.17
├── fastrace-datadog v0.7.17
│   [dev-dependencies]
│   └── example v0.0.0
├── fastrace-futures v0.7.17
├── fastrace-jaeger v0.7.17
│   [dev-dependencies]
│   └── example v0.0.0
├── fastrace-opentelemetry v0.18.0
│   [dev-dependencies]
│   ├── example v0.0.0
│   └── fastrace v0.7.17
└── test-statically-disable v0.0.0
[dev-dependencies]
├── example v0.0.0
├── fastrace v0.7.17
├── fastrace-futures v0.7.17
├── fastrace-macro v0.7.17 (proc-macro)
│   └── fastrace v0.7.17
├── fastrace-opentelemetry v0.18.0
└── test-macros-ui v0.0.0

[YangchenYe323]

@andylokandy @tisonkun Would you like to take a look? Thanks!

[andylokandy]

Thank you!