fix: add 'static lifetime

[mattsse]

This Pull Request fixes/closes #{issue_num}.

It changes the following:

• compile error:

error: `&` without an explicit lifetime name cannot be used here
   --> boa_engine/src/builtins/generator/mod.rs:175:17
    |
175 |     const NAME: &str = "Generator";
    |                 ^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #115010 <https://github.com/rust-lang/rust/issues/115010>
note: the lint level is defined here
   --> boa_engine/src/lib.rs:59:5
    |
59  |     future_incompatible,
    |     ^^^^^^^^^^^^^^^^^^^
    = note: `#[deny(elided_lifetimes_in_associated_constant)]` implied by `#[deny(future_incompatible)]`
help: use the `'static` lifetime
    |
175 |     const NAME: &'static str = "Generator";

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (7e18da6) 50.21% compared to head (9bc9a04) 50.21%.
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3297   +/-   ##
=======================================
  Coverage   50.21%   50.21%           
=======================================
  Files         436      436           
  Lines       42691    42691           
=======================================
  Hits        21438    21438           
  Misses      21253    21253           

Files	Coverage Δ
boa_engine/src/builtins/generator/mod.rs	36.95% <ø> (ø)

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jedel1043]

Thank you for the contribution!