"paste" dependency must be updated, otherwise RUSTSEC-2024-0436 error

[HatemMn]

https://rustsec.org/advisories/RUSTSEC-2024-0436

The paste dep should be replaced with its new successor called pastey

Otherwise, projects that depend on agnostic-lite will have the following error if they use cargo deny

    ├ 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/blob/master/README.md) 
      that this project is not longer maintained as well as archived the repository
      
      ## Possible Alternative(s)
      
      - [pastey](https://crates.io/crates/pastey), a fork of paste and is aimed to be a drop-in replacement with additional features for paste crate
    ├ Announcement: https://github.com/dtolnay/paste
    ├ Solution: No safe upgrade is available!
    ├ paste v1.0.15
      └── agnostic-lite v0.5.6
          ├── cosmian_findex v8.0.0
          └── (dev) cosmian_sse_memories v8.0.0
              └── my_project (*)

[al8n]

Hi, for paste, IMO, it is just a compile-time lib, the current functionalities provided are enough for the agnostic-lite, and it reaches 1.0. I have a quick look at pastey, it seems that it does not fix any issues from the old paste, the new commits are all about CI and other chores.