Bump tauri from 1.6.7 to 1.6.8 in /src-tauri

[dependabot]

Bumps tauri from 1.6.7 to 1.6.8.

Release notes

Sourced from tauri's releases.

tauri v1.6.8

Updating crates.io index

Fetching advisory database from `https://github.com/RustSec/advisory-db.git`
      Loaded 628 security advisories (from /home/runner/.cargo/advisory-db)
    Updating crates.io index
    Scanning Cargo.lock for vulnerabilities (587 crate dependencies)
Crate:     atty
Version:   0.2.14
Warning:   unsound
Title:     Potential unaligned read
Date:      2021-07-04
ID:        RUSTSEC-2021-0145
URL:       https://rustsec.org/advisories/RUSTSEC-2021-0145
Dependency tree:
atty 0.2.14
└── clap 3.2.25
    └── tauri 1.6.8
        ├── tauri 1.6.8
        ├── restart 0.1.0
        └── app-updater 0.1.0
warning: 1 allowed warning found

[1.6.8]

Bug Fixes

• 1f06c2d00 (#9960) Added test::INVOKE_KEY to be used in tauri::InvokePayload when testing using test::assert_ipc_response and test::get_ipc_response.

Updating crates.io index
   Packaging tauri v1.6.8 (/home/runner/work/tauri/tauri/core/tauri)
    Updating crates.io index
   Verifying tauri v1.6.8 (/home/runner/work/tauri/tauri/core/tauri)
 Downloading crates ...
  Downloaded alloc-stdlib v0.2.2
  Downloaded atk v0.15.1
  Downloaded cfg-expr v0.9.1
  Downloaded cfg-expr v0.15.8
  Downloaded cairo-rs v0.15.12
</tr></table> 

... (truncated)

Commits

• bec484c run covector version
• 1f06c2d fix(core): test invoke key, closes #9960
• 6749be0 add publish-hotfix workflow
• See full diff in compare view

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[dependabot]

Looks like tauri is up-to-date now, so this is no longer needed.