build(deps): bump rollup from 2.38.5 to 2.39.0 in /web (#553)

Bumps [rollup](https://github.com/rollup/rollup) from 2.38.5 to 2.39.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v2.38.5...v2.39.0)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

web/package-lock.json

@@ -2703,9 +2703,9 @@
             }
         },
         "rollup": {
-            "version": "2.38.5",
-            "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.38.5.tgz",
-            "integrity": "sha512-VoWt8DysFGDVRGWuHTqZzT02J0ASgjVq/hPs9QcBOGMd7B+jfTr/iqMVEyOi901rE3xq+Deq66GzIT1yt7sGwQ==",
+            "version": "2.39.0",
+            "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.39.0.tgz",
+            "integrity": "sha512-+WR3bttcq7zE+BntH09UxaW3bQo3vItuYeLsyk4dL2tuwbeSKJuvwiawyhEnvRdRgrII0Uzk00FpctHO/zB1kw==",
             "requires": {
                 "fsevents": "~2.3.1"
             }

web/package.json

@@ -22,7 +22,7 @@
         "flowchart.js": "^1.15.0",
         "lit-element": "^2.4.0",
         "lit-html": "^1.3.0",
-        "rollup": "^2.38.5",
+        "rollup": "^2.39.0",
         "rollup-plugin-copy": "^3.3.0",
         "rollup-plugin-cssimport": "^1.0.2",
         "rollup-plugin-external-globals": "^0.6.1",