fix(plugin-driver): use std:process over tokio for plugin loads on al… · pact-foundation/pact-plugins@1473cc6

Process completed with exit code 1.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions-rs/toolchain@v1, marcopolo/cargo@master. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3, actions-rs/toolchain@v1, marcopolo/cargo@master. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

unused imports: `Command` and `self`

`pact-plugin-driver` (lib) generated 1 warning (run `cargo fix --lib -p pact-plugin-driver` to apply 1 suggestion)

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

unused imports: `Command` and `self`

statics have by default a `'static` lifetime

this `impl` can be derived

this `MutexGuard` is held across an `await` point

this expression creates a reference which is immediately dereferenced by the compiler

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