ci/fedora: manage rust version ourselves

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37414>

.gitlab-ci/container/fedora/x86_64_build.sh

@@ -78,7 +78,6 @@ DEPS=(
     python3-ply
     python3-pycparser
     python3-yaml
-    rust-packaging
     spirv-tools-devel
     spirv-llvm-translator-devel
     vulkan-headers
@@ -104,6 +103,8 @@ rm -rf $XORGMACROS_VERSION
 
 . .gitlab-ci/container/install-meson.sh
 
+. .gitlab-ci/container/build-rust.sh
+
 . .gitlab-ci/container/build-bindgen.sh
 
 . .gitlab-ci/container/build-mold.sh