Only upgrade GitHub Actions

@No9 Simplifying as you suggest.

Author: cclauss

.github/workflows/push.yml

@@ -16,17 +16,18 @@ jobs:
       fail-fast: false
       matrix:
         node:
+          - version: 10.x
+          - version: 12.x
           - version: 14.x
-          - version: 16.x
-          - version: 18.x
+          - version: 15.x
             mirror: https://nodejs.org/download/nightly
-          - version: 18.x
+          - version: 15.x
             mirror: https://nodejs.org/download/v8-canary
         # os: [ubuntu-latest, macos-latest]
         # Temporarily disable MacOS until
         # https://github.com/nodejs/node/issues/32981 is fixed
         # TODO(mmarchini): test on 20.04 (need different lldb version)
-        os: [ubuntu-20.04]  # [ubuntu-18.04, ubuntu-20.04, ubuntu-22.04]
+        os: [ubuntu-18.04, ubuntu-20.04]
         llvm: [ 8, 9 ]
     steps:
       - uses: actions/checkout@v3
@@ -47,19 +48,19 @@ jobs:
           npm install --llnode_build_addon=true --llnode_coverage=true
       - name: run tests
         run: TEST_LLDB_BINARY=`which lldb-${{ matrix.llvm }}` npm run nyc-test-all
-        if: matrix.node.version != '18.x'
+        if: matrix.node.version != '15.x'
       - name: run tests (nightly)
         run: TEST_LLDB_BINARY=`which lldb-${{ matrix.llvm }}` npm run nyc-test-all
-        if: matrix.node.version == '18.x'
+        if: matrix.node.version == '15.x'
         continue-on-error: true
       - name: prepare coverage
-        if: startsWith(matrix.os, 'ubuntu-') && matrix.node.version != '18.x'
+        if: startsWith(matrix.os, 'ubuntu-') && matrix.node.version != '15.x'
         run: |
           npm run coverage
           cat ./coverage-js.info > ./coverage.info
           cat ./coverage-cc.info >> ./coverage.info
       - name: Upload coverage report to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v3
         with:
           file: ./coverage.info
   linter:
@@ -69,7 +70,7 @@ jobs:
       - name: Use Node.js LTS
         uses: actions/setup-node@v3
         with:
-          node-version: 18.x
+          node-version: 12.x
       - name: npm install, build, and test
         run: |
           sudo apt-get -qq update