Force node16 usage for actions on amazonlinux 1 & 2 due to glibc requ…

…irement of node20 (#345)

.github/workflows/main.yml

@@ -42,6 +42,10 @@ jobs:
       LDFLAGS: ${{ matrix.compiler.ldflags }}
       UBSAN_OPTIONS: "print_stacktrace=1"
       ASAN_OPTIONS: "halt_on_error=0"
+      # Tell GHA to force the use of node16. This will only work while node16 exists in the GHA runners,
+      # GitHub is moving to node20 (now default) and will eventually remove node16 entirely from the runner.
+      ACTIONS_RUNNER_FORCE_ACTIONS_NODE_VERSION: node16
+      ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
     steps:
       # Amazon Linux needs a newer version of git installed for actions/checkout@v2
       - name: Install Dependencies