chore: update the runners

Author: antonbaliasnikov

.github/workflows/regression-tests.yml

@@ -80,7 +80,7 @@ jobs:
 
   check-formatting:
     if: github.event_name == 'pull_request'
-    runs-on: [ci-runner-compiler, Linux]
+    runs-on: matterlabs-ci-runner-high-performance
     container:
       image: ghcr.io/matter-labs/zksync-llvm-runner:latest
       options: -m 110g
@@ -127,7 +127,7 @@ jobs:
             --changed-files ${{ steps.changed-files.outputs.all_changed_files }}
 
   regression-tests:
-    runs-on: [ci-runner-compiler, Linux]
+    runs-on: matterlabs-ci-runner-high-performance
     container:
       image: ghcr.io/matter-labs/zksync-llvm-runner:latest
       options: -m 110g
@@ -138,6 +138,14 @@ jobs:
       matrix: ${{ fromJson(needs.prepare-test-matrix.outputs.matrix-tests) }}
     steps:
 
+      - uses: actions/checkout@v4
+        with:
+          repository: NomicFoundation/solx
+          ref: 'main'
+
+      - name: Clean up LLVM directory
+        run: rm -rf llvm
+
       - uses: actions/checkout@v4
         with:
           ref: ${{ matrix.commit }}