chore: slugify artifact ID (#614)

In #613 we made the artifact ID unique for different Node versions, but
the characters in `lts/*` aren't all safe for inclusion in the artifact
ID.

Slugify the artifact ID first before using it.

---
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under the terms of the Apache-2.0 license

Author: rix0rrr

.github/workflows/integ.yml

@@ -455,13 +455,25 @@ export class CdkCliIntegTestsWorkflow extends Component {
             'fi',
           ].join('\n'),
         },
+        // Slugify artifact ID, because matrix.node will contain invalid chars
+        {
+          name: 'Slugify artifact id',
+          id: 'artifactid',
+          run: [
+            'slug=$(node -p \'process.env.INPUT.replace(/[^a-z0-9._-]/gi, "-")\')',
+            'echo "slug=$slug" >> "$GITHUB_OUTPUT"',
+          ].join('\n'),
+          env: {
+            INPUT: 'logs-${{ matrix.suite }}-${{ matrix.node }}',
+          },
+        },
         {
           name: 'Upload logs',
           if: 'always()',
           uses: 'actions/[email protected]',
           id: 'logupload',
           with: {
-            name: 'logs-${{ matrix.suite }}-${{ matrix.node }}',
+            name: '${{ steps.artifactid.outputs.slug }}',
             path: 'logs/',
             overwrite: 'true',
           },