fix(deps): bump modern-normalize in /gatsby-theme-sputnik

Bumps [modern-normalize](https://github.com/sindresorhus/modern-normalize) from 0.5.0 to 0.6.0.
- [Release notes](https://github.com/sindresorhus/modern-normalize/releases)
- [Commits](sindresorhus/modern-normalize@v0.5.0...v0.6.0)

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

gatsby-theme-sputnik/package.json

@@ -61,7 +61,7 @@
     "gatsby-plugin-react-helmet": "^3.1.8",
     "gatsby-plugin-robots-txt": "^1.5.0",
     "gatsby-plugin-sitemap": "^2.2.14",
-    "modern-normalize": "^0.5.0",
+    "modern-normalize": "^0.6.0",
     "react-helmet": "^5.2.1",
     "typeface-lato": "0.0.75"
   },