Update validate-linux-binaries.yml

Author: andysamfb

.github/workflows/validate-linux-binaries.yml

@@ -75,7 +75,7 @@ jobs:
       matrix:
         ${{ fromJson(needs.generate-libtorch-matrix.outputs.matrix) }}
       fail-fast: false
-    runs-on: "ubuntu-20.04"
+    runs-on: ${{ matrix.validation_runner }}
     env:
       PYTHON_VERSION: ${{ matrix.python_version }}
     steps: