Update patch paths for tokio, crossbeam, and curve25519-dalek

[willhickey]

Problem

I moved these 3 repos from solana-labs to anza-xyz. We use those repos as patches.

• curve25519-dalek
• crossbeam
• solana-tokio

Summary of Changes

Update the manifest to use the new locations

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.

[willhickey]

Looks like the redirects will be valid indefinitely, so maybe we skip the v1.18 backport. @yihau, do you have a preference here?
https://github.com/orgs/community/discussions/22669

[yihau]

I guess we can skip the bp. no one will create repos with the same names under solana-labs 🤞

[yihau]

I changed my mind haha. I guess bp is harmless. let's do it and see what others think!

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.