fix(ci): update ci for ubuntu18.04(#79)

.github/workflows/ubuntu18-v9.0.0-build.yaml

@@ -1,8 +1,13 @@
 name: ubuntu18.04 v9.0.0 build x86-64
 run-name: ubuntu18 x86-64
 
+# make GHA actions use node16 which still works with bionic
+# See https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/
+# Unclear how long this will work though
 env:
   ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
+  ACTIONS_RUNNER_FORCED_INTERNAL_NODE_VERSION: "node16"
+  ACTIONS_RUNNER_FORCE_ACTIONS_NODE_VERSION: "node16"
 
 on:
   push:
@@ -21,8 +26,7 @@ jobs:
       options: --volume ${{ github.workspace }}:/workspace/${{ github.repository }}
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v3
-
+        uses: actions/checkout@v2
       - name: Install
         env:
           DEBIAN_FRONTEND: noninteractive