Auto merge of #132316 - MarcoIeni:ci-free-runners-windows, r=<try>

CI: use free runners for 4 fast windows jobs

I noticed those jobs are faster than the others. The longest is 1 h 30 min, while the [auto builds](https://github.com/rust-lang-ci/rust/actions?query=branch%3Aauto) usually take > 2h 20 min.

I'll try how much time windows free runners take for these jobs to see if we can use them instead of the large one.

Goal: these jobs shouldn't take longer than the slowest jobs of the auto build.

- [ ] provide data based on multiple commits, not just based on one commit.

try-job: dist-i686-msvc
try-job: dist-i686-mingw
try-job: dist-x86_64-mingw
try-job: dist-x86_64-msvc-alt

Author: bors

src/ci/github-actions/jobs.yml

@@ -463,7 +463,7 @@ auto:
       SCRIPT: python x.py dist bootstrap --include-default-paths
       DIST_REQUIRE_ALL_TOOLS: 1
       CODEGEN_BACKENDS: llvm,cranelift
-    <<: *job-windows-8c
+    <<: *job-windows
 
   - image: dist-aarch64-msvc
     env:
@@ -488,7 +488,7 @@ auto:
       SCRIPT: python x.py dist bootstrap --include-default-paths
       DIST_REQUIRE_ALL_TOOLS: 1
       CODEGEN_BACKENDS: llvm,cranelift
-    <<: *job-windows-8c
+    <<: *job-windows
 
   - image: dist-x86_64-mingw
     env:
@@ -501,10 +501,10 @@ auto:
       NO_DOWNLOAD_CI_LLVM: 1
       DIST_REQUIRE_ALL_TOOLS: 1
       CODEGEN_BACKENDS: llvm,cranelift
-    <<: *job-windows-8c
+    <<: *job-windows
 
   - image: dist-x86_64-msvc-alt
     env:
       RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-extended --enable-profiler
       SCRIPT: python x.py dist bootstrap --include-default-paths
-    <<: *job-windows-8c
+    <<: *job-windows