docs: bump vuepress-theme-cosmos (#5614)

## Description

- bump to 1.0.175

### Related:
- https://github.com/cosmos/vuepress-theme-cosmos/pull/125
- https://github.com/cosmos/vuepress-theme-cosmos/pull/151

docs/package.json

@@ -4,7 +4,7 @@
   "description": "Tendermint Core Documentation",
   "main": "index.js",
   "dependencies": {
-    "vuepress-theme-cosmos": "^1.0.173"
+    "vuepress-theme-cosmos": "^1.0.175"
   },
   "devDependencies": {
     "watchpack": "^2.0.0"