chore: fix clippy error in ci

[togami2864]

To avoid clippy error like #802 in CI.
Maybe this ci error has affected by rust-lang/rust-clippy#10265

[coveralls]

Pull Request Test Coverage Report for Build 4081311050

• 311 of 357 (87.11%) changed or added relevant lines in 14 files are covered.
• 5 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.1%) to 86.052%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/ast/value.rs	8	9	88.89%
src/test_utils.rs	0	1	0.0%
src/ast/query.rs	42	45	93.33%
src/tokenizer.rs	15	18	83.33%
tests/sqlparser_postgres.rs	2	7	28.57%
src/ast/visitor.rs	0	6	0.0%
src/parser.rs	2	9	22.22%
src/ast/mod.rs	178	198	89.9%

Files with Coverage Reduction	New Missed Lines	%
src/ast/query.rs	1	85.59%
src/lib.rs	1	10.02%
src/parser.rs	1	83.29%
src/ast/mod.rs	2	78.02%

Totals
Change from base Build 3975768953:	0.1%
Covered Lines:	13197
Relevant Lines:	15336

---

💛 - Coveralls

[togami2864]

I fixed this but it also might be good simply disable this rule.

[AugustoFKL]

Well, only linter fixes

Thanks!

[AugustoFKL]

@alamb, can this be approved before other PRs, please?

It seems like Rust had an update, so other PR's linters are failing.

[alamb]

Looks good to me -- thank you @togami2864 and @AugustoFKL