Update dependency clsx to v2

Author: renovate[bot]

package.json

@@ -19,7 +19,7 @@
     "@reach/router": "1.3.4",
     "axios": "1.6.7",
     "babel-preset-gatsby": "^3.9.0",
-    "clsx": "^1.2.1",
+    "clsx": "^2.0.0",
     "cross-env": "7.0.3",
     "gatsby": "5.13.1",
     "gatsby-image": "3.11.0",