Update rust 1.81.0

[zjb0807]

Related: paritytech/srtool#87

Running the cargo test command fails with an error:

error[E0433]: failed to resolve: could not find `try_runtime_enabled` in `frame_support`
   --> /home/xxx/.cargo/registry/src/rsproxy.cn-8f6827c7555bfaf8/frame-system-37.1.0/src/lib.rs:260:1
    |
260 | #[frame_support::pallet]
    | ^^^^^^^^^^^^^^^^^^^^^^^^ could not find `try_runtime_enabled` in `frame_support`
    |
    = note: this error originates in the attribute macro `frame_support::pallet` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0433]: failed to resolve: could not find `try_runtime_enabled` in `frame_support`
   --> /home/xxx/.cargo/registry/src/rsproxy.cn-8f6827c7555bfaf8/frame-system-37.1.0/src/lib.rs:637:12
    |
637 |     #[pallet::hooks]
    |               ^^^^^ could not find `try_runtime_enabled` in `frame_support`

For more information about this error, try `rustc --explain E0433`.

Solution:

cargo update -p frame-support-procedural --precise 30.0.2

So I temporarily updated .github/workflows/test.yml to get CI working.

TODO:

• Fix it after stable2409

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.67%. Comparing base (144a962) to head (b34d073).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1009      +/-   ##
==========================================
- Coverage   66.12%   65.67%   -0.45%     
==========================================
  Files          49       49              
  Lines        3690     3700      +10     
==========================================
- Hits         2440     2430      -10     
- Misses       1250     1270      +20     

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