fix(yanky-nvim)!: change conflicting mapping <Leader>p → <Leader>fy

[nisavid]

Closes #830

📑 Description

Map the yanky.nvim/Telescope yank history picker to <Leader>fy (mnemonic: “find yanks”) and change its description to Find yanks.

[github-actions]

Review Checklist

Does this PR follow the [Contribution Guidelines](development guidelines)? Following is a partial checklist:

Proper conventional commit scoping:

• If you are adding a new plugin, the scope would be the name of the category it is being added into. ex. feat(utility): added noice.nvim plugin

• If you are modifying a pre-existing plugin or pack, the scope would be the name of the plugin folder. ex. fix(noice-nvim): fix LSP handler error

• Pull request title has the appropriate conventional commit type and scope where the scope is the name of the pre-existing directory in the project as described above

• README is properly formatted and uses fenced in links with <url> unless they are inside a [title](url)

• Proper usage of opts table rather than setting things up with the config function.

[Uzaaft]

Tbf, this makes a lot of sense! :)