Revert "Use small runner for msvc-ext2 job"

This reverts commit ebe4fc4.

Author: tgross35

src/ci/github-actions/jobs.yml

@@ -31,10 +31,6 @@ runners:
     os: macos-14
     <<: *base-job
 
-  - &job-windows
-    os: windows-2022
-    <<: *base-job
-
   - &job-windows-8c
     os: windows-2022-8core-32gb
     <<: *base-job
@@ -451,7 +447,7 @@ auto:
         python x.py miri --stage 2 library/alloc --test-args notest &&
         python x.py miri --stage 2 library/std --test-args notest
       RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-lld
-    <<: *job-windows
+    <<: *job-windows-8c
 
   # Run `checktools.sh` and upload the toolstate file.
   - image: x86_64-msvc-ext3