chore: update rust version

[meskill]

Summary:
Briefly describe the changes made in this PR.

Issue Reference(s):
Fixes #... (Replace "..." with the issue number)

Build & Testing:

• [ ] I ran cargo test successfully.
• [ ] I have run ./lint.sh --mode=fix to fix all linting issues raised by ./lint.sh --mode=check.

Checklist:

• [ ] I have added relevant unit & integration tests.
• [ ] I have updated the documentation accordingly.
• [ ] I have performed a self-review of my code.
• [ ] PR follows the naming convention of <type>(<optional scope>): <title>

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 54.54545% with 5 lines in your changes missing coverage. Please review.

Project coverage is 86.94%. Comparing base (d63b288) to head (088a416). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/core/json/borrow.rs	0.00%	3 Missing :warning:
src/cli/fmt.rs	0.00%	1 Missing :warning:
src/core/grpc/request_template.rs	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3043 +/- ## ========================================== - Coverage 87.05% 86.94% -0.12% ========================================== Files 280 280 Lines 27478 27291 -187 ========================================== - Hits 23921 23727 -194 - Misses 3557 3564 +7 ```

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[github-actions[bot]]

Bencher Report

Branch	3043/merge
Testbed	benchmarking-runner

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Benchmark	Latency	nanoseconds (ns)
from_json_bench	📈 view plot ⚠️ NO THRESHOLD	6,095,200.00
group_by	📈 view plot ⚠️ NO THRESHOLD	487.04
input/args.missing	📈 view plot ⚠️ NO THRESHOLD	22.98
input/args.nested.existing	📈 view plot ⚠️ NO THRESHOLD	41.07
input/args.nested.missing	📈 view plot ⚠️ NO THRESHOLD	36.02
input/args.root	📈 view plot ⚠️ NO THRESHOLD	38.07
input/headers.existing	📈 view plot ⚠️ NO THRESHOLD	32.70
input/headers.missing	📈 view plot ⚠️ NO THRESHOLD	33.75
input/value.missing	📈 view plot ⚠️ NO THRESHOLD	22.59
input/value.nested.existing	📈 view plot ⚠️ NO THRESHOLD	42.21
input/value.nested.missing	📈 view plot ⚠️ NO THRESHOLD	35.73
input/value.root	📈 view plot ⚠️ NO THRESHOLD	41.69
input/vars.existing	📈 view plot ⚠️ NO THRESHOLD	8.34
input/vars.missing	📈 view plot ⚠️ NO THRESHOLD	11.19
synth_nested	📈 view plot ⚠️ NO THRESHOLD	94,749.00
synth_nested_borrow	📈 view plot ⚠️ NO THRESHOLD	42,152.00
test_batched_body	📈 view plot ⚠️ NO THRESHOLD	1,881.90
test_batched_body #2	📈 view plot ⚠️ NO THRESHOLD	1,505,700.00
test_data_loader	📈 view plot ⚠️ NO THRESHOLD	389,500.00
test_handle_request	📈 view plot ⚠️ NO THRESHOLD	127,630.00
test_handle_request_jit	📈 view plot ⚠️ NO THRESHOLD	61,256.00
test_http_execute_method	📈 view plot ⚠️ NO THRESHOLD	14,998.00
with_mustache_expressions	📈 view plot ⚠️ NO THRESHOLD	1,085.90
with_mustache_literal	📈 view plot ⚠️ NO THRESHOLD	699.17

🐰 View full continuous benchmarking report in Bencher