test: Test Node.js 23 in CI (#5416)

Author: trentm

.github/workflows/unit-test.yml

@@ -17,6 +17,7 @@ jobs:
           - "20.6.0"
           - "20"
           - "22"
+          - "23"
     runs-on: ubuntu-latest
     env:
       NPM_CONFIG_UNSAFE_PERM: true
@@ -43,7 +44,8 @@ jobs:
       - run: npm install -g npm@latest
         if: ${{
           matrix.node_version == '20' ||
-          matrix.node_version == '22'
+          matrix.node_version == '22' ||
+          matrix.node_version == '23'
           }}
 
       - name: Bootstrap
@@ -52,8 +54,15 @@ jobs:
       - name: Build 🔧
         run: npm run compile
 
-      - name: Unit tests
-        run: npm run test
+      - run: npm test
+        if: ${{ matrix.node_version != '23' }}
+      # Node.js 23 type stripping conflicts with mocha usage of ts-node.
+      # See https://github.com/open-telemetry/opentelemetry-js/issues/5415
+      - run: npm test
+        env:
+          NODE_OPTIONS: '--no-experimental-strip-types'
+        if: ${{ matrix.node_version == '23' }}
+
       - name: Report Coverage
         uses: codecov/codecov-action@v5
         env: