build(deps): palette v0.7.6 -> v0.7.5

palette_derive 0.7.6 introduces a new dependency on the by_address crate,
which looks like it has correctness / soundness issues (uncovered by
running tests in "release" mode or in miri):

mbrubeck/by_address#9

Signed-off-by: Fabio Valentini <decathorpe@gmail.com>

Author: decathorpe

Cargo.lock

@@ -97,7 +97,7 @@ log = "0.4"
 natord = "1.0"
 path-clean = "1.0.1"
 number_prefix = "0.4"
-palette = { version = "0.7.6", default-features = false, features = ["std"] }
+palette = { version = "0.7.5", default-features = false, features = ["std"] }
 once_cell = "1.20.2"
 percent-encoding = "2.3.1"
 phf = { version = "0.11.2", features = ["macros"] }