Update .github/workflows/deploy-site.yml

Co-authored-by: Pavel Borisov <37436896+PavelSBorisov@users.noreply.github.com>
Signed-off-by: Michael Garber <michael.garber@hashgraph.com>

Author: mgarbs

.github/workflows/deploy-site.yml

@@ -59,7 +59,7 @@ jobs:
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
+    runs-on: hiero-improvement-proposals-linux-medium
     needs: build
     steps:
       - name: Harden the runner (Audit all outbound calls)