enable clippy for bootstrap on CI PRs

Signed-off-by: onur-ozkan <work@onurozkan.dev>

Author: onur-ozkan

src/ci/docker/host-x86_64/mingw-check/Dockerfile

@@ -46,6 +46,7 @@ ENV SCRIPT python3 ../x.py --stage 2 test src/tools/expand-yaml-anchors && \
            # We also skip the x86_64-unknown-linux-gnu target as it is well-tested by other jobs.
            python3 ../x.py check --stage 0 --set build.optimized-compiler-builtins=false core alloc std --target=aarch64-unknown-linux-gnu,i686-pc-windows-msvc,i686-unknown-linux-gnu,x86_64-apple-darwin,x86_64-pc-windows-gnu,x86_64-pc-windows-msvc && \
            python3 ../x.py check --target=i686-pc-windows-gnu --host=i686-pc-windows-gnu && \
+           python3 ../x.py clippy bootstrap -Dwarnings && \
            python3 ../x.py clippy compiler library -Aclippy::all -Dclippy::correctness && \
            python3 ../x.py build --stage 0 src/tools/build-manifest && \
            python3 ../x.py test --stage 0 src/tools/compiletest && \