chore: bump ruct toolchain version from 1.71.0 to 1.74.0

[Phoenix500526]

Please briefly answer these questions:
Depends-On: #776

• what problem are you trying to solve? (or if there's no problem, what's the motivation for this change?)
  bump rustc toolchain version from 1.71.0 to 1.74.0

• what changes does this pull request make?

• are there any non-obvious implications of these changes? (does it break compatibility with previous versions, etc)

[codecov]

Codecov Report

Attention: Patch coverage is 69.90291% with 62 lines in your changes are missing coverage. Please review.

Project coverage is 75.39%. Comparing base (e35b35a) to head (f62e9f2).
Report is 18 commits behind head on master.

❗ Current head f62e9f2 differs from pull request most recent head 7b5d112. Consider uploading reports for the commit 7b5d112 to get more accurate results

Files	Patch %	Lines
crates/xline/src/utils/args.rs	0.00%	18 Missing ⚠️
crates/engine/src/rocksdb_engine/mod.rs	84.21%	3 Missing and 6 partials ⚠️
crates/xline/src/storage/auth_store/store.rs	50.00%	6 Missing ⚠️
crates/curp/src/server/curp_node.rs	84.37%	5 Missing ⚠️
crates/xlinectl/src/command/watch.rs	0.00%	5 Missing ⚠️
crates/curp/src/rpc/mod.rs	72.72%	3 Missing ⚠️
crates/curp/src/server/storage/db.rs	75.00%	2 Missing ⚠️
crates/xline/src/metrics.rs	0.00%	2 Missing ⚠️
crates/xline/src/storage/lease_store/mod.rs	50.00%	2 Missing ⚠️
crates/curp-test-utils/src/test_cmd.rs	90.90%	0 Missing and 1 partial ⚠️
... and 9 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #758      +/-   ##
==========================================
- Coverage   75.55%   75.39%   -0.17%     
==========================================
  Files         180      182       +2     
  Lines       26938    26995      +57     
  Branches    26938    26995      +57     
==========================================
- Hits        20353    20352       -1     
- Misses       5366     5381      +15     
- Partials     1219     1262      +43     

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