Unrolled build for rust-lang#136970

Rollup merge of rust-lang#136970 - marcoieni:no-largedisk, r=Kobzol

ci: move `x86_64-gnu-debug` job to the free runner

try-job: x86_64-gnu-debug

Author: rust-timer

src/ci/github-actions/jobs.yml

@@ -294,9 +294,7 @@ auto:
     <<: *job-linux-4c
 
   - name: x86_64-gnu-debug
-    # This seems to be needed because a full stage 2 build + run-make tests
-    # overwhelms the storage capacity of the standard 4c runner.
-    <<: *job-linux-4c-largedisk
+    <<: *job-linux-4c
 
   - name: x86_64-gnu-distcheck
     <<: *job-linux-8c