fix clippy warnings: this looks like a formatting argument but it is not part of a formatting macro

[0x53A]

With my version of clippy clippy 0.1.86 (99768c80a1 2025-01-23) (probably newer than CI build?) I'm getting two warnings on current master:

warning: this looks like a formatting argument but it is not part of a formatting macro
  --> itest/rust/src/builtin_tests/geometry/quaternion_test.rs:44:35
   |
44 |     expect_panic("Quaternion axis {axis:?} is not normalized.", || {
   |                                   ^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#literal_string_with_formatting_args
   = note: `#[warn(clippy::literal_string_with_formatting_args)]` on by default

warning: this looks like a formatting argument but it is not part of a formatting macro
  --> itest/rust/src/builtin_tests/geometry/quaternion_test.rs:48:35
   |
48 |     expect_panic("Quaternion axis {axis:?} is not normalized.", || {
   |                                   ^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#literal_string_with_formatting_args

The warnings are correct, expect_panic is a function (not a macro) that takes a string argument:

Edit:

yep the warning was added with v1.85: https://rust-lang.github.io/rust-clippy/master/index.html#literal_string_with_formatting_args

Edit2: hmm it's part of the "nursery" group so should be disabled by default, do feel free to just close this PR if it's not applicable.

[GodotRust]

API docs are being generated and will be shortly available at: https://godot-rust.github.io/docs/gdext/pr-1041

[Bromeon]

Thanks, good catch!

The clippy lints are applicable, however I think it's better to adjust the string literal to include the values verbatim, than formatting them (see example). Could you change this?

[0x53A]

done

[Bromeon]

Thank you!