drm-sys: Bump bindgen minimum-version to 0.69.3

To solve rust-lang/regex#931 when the CI builds
`--all-features` on a `-Zminimal-versions` lockfile.

Author: MarijnS95

drm-ffi/drm-sys/Cargo.toml

@@ -15,7 +15,7 @@ use_bindgen = ["bindgen", "pkg-config"]
 update_bindings = ["use_bindgen"]
 
 [build-dependencies]
-bindgen = { version = "0.69.1", optional = true }
+bindgen = { version = "0.69.3", optional = true }
 pkg-config = { version = "0.3.19", optional = true }
 
 [target.'cfg(any(target_os = "android", target_os = "linux"))'.dependencies]