ci: cap dev-only bitflags below 2.12 to fix dispatch2 recursion overflow

bitflags 2.12.0 overflows the macro recursion limit while compiling the
transitive dispatch2 crate (pulled in via the bevy dev-dependency),
breaking the fresh-resolution --all-features --all-targets lint/test
builds in CI. Cargo.lock is gitignored, so CI always resolves to the
latest compatible versions and picked the broken 2.12.0. Constrain the
2.x bitflags bucket to <2.12; this is dev-only and does not change the
published dependency set.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: 1313

Cargo.toml

@@ -68,6 +68,11 @@ apple-cf = { version = ">=0.6, <0.10", default-features = false, features = ["cg
 apple-metal = { version = ">=0.6, <0.9", default-features = false }
 
 [dev-dependencies]
+# Cap the transitive bitflags pulled in via the bevy dev-dependency: bitflags
+# 2.12.0 overflows the macro recursion limit while compiling dispatch2, which
+# breaks `--all-targets`/`--all-features` lint and test builds. This is a
+# dev-only constraint and does not affect the published dependency set.
+bitflags = ">=2.0, <2.12"
 png = "0.18"
 tokio = { version = "1", features = ["sync", "rt", "rt-multi-thread", "macros", "test-util"] }
 winit = "0.30"