Update jsonnet-rs tto more recent version

[iilyak]

The jsonnet-rs is pinned to 0.6. Is there a technical reason not to update it to the recent v0.17.0. The v0.17.0 should fix the build problem for users who use nix package manager.

builder for '/nix/store/hg1z45lizakkqyzwxq74jzw9ygx5986k-ffizer-deps-dirty.drv' failed with exit code 101; last 10 log lines:
    process didn't exit successfully: `/private/tmp/nix-shell.fhyYhj/nix-build-ffizer-deps-dirty.drv-0/dummy-src/target/release/build/jsonnet-sys-dcb7a593c1d16861/build-script-build` (exit code: 101)
    --- stdout
    embedding: "jsonnet/stdlib/std.jsonnet" -> "jsonnet/core/std.jsonnet.h"

    --- stderr
    thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 13, kind: PermissionDenied, message: "Permission denied" }', /sources/jsonnet-sys-0.6.0/build.rs:28:47
    note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
  warning: build failed, waiting for other jobs to finish...
  error: build failed
  [naersk] cargo returned with exit code 101, exiting
error: --- Error ---------------------------------------------------------------------------------------------------------------------------------- nix
1 dependencies of derivation '/nix/store/bnhvyp6zg6x8zm8cvcd4z0h9wq6mx234-ffizer-dirty.drv' failed to build