paste is unmaintained, actix fails cargo deny checks

[khuey]

Since RUSTSEC-2024-0436 was pushed live this morning in rustsec/advisory-db#2247 cargo deny fails on projects using actix-service

error[unmaintained]: paste - no longer maintained
    ┌─ ..../main/Cargo.lock:349:1
    │
349 │ paste 1.0.15 registry+https://github.com/rust-lang/crates.io-index
    │ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ unmaintained advisory detected
    │
    ├ ID: RUSTSEC-2024-0436
    ├ Advisory: https://rustsec.org/advisories/RUSTSEC-2024-0436
    ├ The creator of the crate `paste` has stated in the [`README.md`](https://github.com/dtolnay/paste/b
lob/master/README.md)
      that this project is not longer maintained as well as archived the repository
    ├ Announcement: https://github.com/dtolnay/paste
    ├ Solution: No safe upgrade is available!
    ├ paste v1.0.15
      └── actix-service v2.0.2
          ├── actix-http v3.9.0
...

[robjtede]

I'll have a think about this.

Might be interesting to follow EmbarkStudios/cargo-deny#752.

[dbanty]

Without getting into the value of it—if you'd like to avoid future cargo-deny users bumping into this, the removal seems fairly straightforward: #649

[khuey]

Thanks for the very rapid turnaround on this.