chore: make logs artifacts unique per matrix job

We used to try to upload all logs under the same artifact name,
but we need to make them explicitly unique per matrix job otherwise
the names collide.

Also include a link to the artifact name in the summary, just for kicks.

Author: rix0rrr

.github/workflows/integ.yml

@@ -422,19 +422,26 @@ export class CdkCliIntegTestsWorkflow extends Component {
         {
           name: 'Set workflow summary',
           run: [
-            'echo "## Test results" >> $GITHUB_STEP_SUMMARY',
             'cat logs/md/*.md >> $GITHUB_STEP_SUMMARY',
           ].join('\n'),
         },
         {
           name: 'Upload logs',
           uses: 'actions/[email protected]',
+          id: 'logupload',
           with: {
-            name: 'logs',
+            name: 'logs-${{ matrix.suite }}',
             path: 'logs/',
             overwrite: 'true',
           },
         },
+        {
+          name: 'Append artifact URL',
+          run: [
+            'echo "" >> $GITHUB_STEP_SUMMARY',
+            'echo "[Logs](${{ steps.logupload.outputs.artifact-url }})" >> $GITHUB_STEP_SUMMARY',
+          ].join('\n'),
+        },
       ],
     });