Fix check in mingw-check-1

Author: Kobzol

src/ci/docker/host-x86_64/mingw-check-1/Dockerfile

@@ -48,7 +48,7 @@ ENV SCRIPT \
            python3 ../x.py build src/tools/build-manifest && \
            python3 ../x.py test --stage 0 src/tools/compiletest && \
            python3 ../x.py check compiletest --set build.compiletest-use-stage0-libtest=true && \
-           python3 ../x.py check --stage 1 --target=i686-pc-windows-gnu --host=i686-pc-windows-gnu && \
+           python3 ../x.py check --stage 2 --target=i686-pc-windows-gnu --host=i686-pc-windows-gnu && \
            python3 ../x.py check --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 && \
            /scripts/validate-toolstate.sh && \
            reuse --include-submodules lint && \