build+ci: support macOS on arm64

Refs: #5135
Change-Id: Ifac57bf18dea805dc9eab06039806858bb3b6f20
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 47d9a6a..2854627 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -53,7 +53,7 @@
             os: macos-11
     runs-on: ${{ matrix.os }}
     env:
-      NODE_LABELS: OSX
+      NODE_LABELS: macos
       WAF_JOBS: 3
     steps:
       - name: Set up Xcode
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index f27285b..19f1f82 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -26,7 +26,7 @@
         run: |
           case ${RUNNER_OS} in
             Linux) export NODE_LABELS="Linux Ubuntu" ;;
-            macOS) export NODE_LABELS="OSX" ;;
+            macOS) export NODE_LABELS="macos" ;;
           esac
           find .jenkins.d/ -type f -name '[1-9]*.sh' -exec chmod -x '{}' +
           ./.jenkins