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

Bumps [modern-normalize](https://github.com/sindresorhus/modern-normalize) from 0.6.0 to 0.7.0.
- [Release notes](https://github.com/sindresorhus/modern-normalize/releases)
- [Commits](sindresorhus/modern-normalize@v0.6.0...v0.7.0)

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

gatsby-theme-sputnik/package.json

@@ -50,7 +50,7 @@
     "gatsby-plugin-react-helmet": "^3.1.8",
     "gatsby-plugin-robots-txt": "^1.5.0",
     "gatsby-plugin-sitemap": "^2.2.14",
-    "modern-normalize": "^0.6.0",
+    "modern-normalize": "^0.7.0",
     "react-helmet": "^6.0.0",
     "typeface-lato": "0.0.75"
   },