Bump gutenberg-css from 0.6.1 to 0.7.0 in /CSETWebNg

Bumps [gutenberg-css](https://github.com/BafS/Gutenberg) from 0.6.1 to 0.7.0.
- [Release notes](https://github.com/BafS/Gutenberg/releases)
- [Commits](BafS/Gutenberg@v0.6.1...v0.7.0)

---
updated-dependencies:
- dependency-name: gutenberg-css
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

CSETWebNg/package.json

@@ -62,7 +62,7 @@
     "file-saver": "^2.0.5",
     "font-awesome": "^4.7.0",
     "fuse.js": "^6.6.2",
-    "gutenberg-css": "^0.6.1",
+    "gutenberg-css": "^0.7.0",
     "handlebars": "^4.7.7",
     "html-to-pdfmake": "^2.4.19",
     "intersection-observer": "^0.12.0",