chore: bump viem from 2.21.14 to 2.21.15

Bumps [viem](https://github.com/wevm/viem) from 2.21.14 to 2.21.15.
- [Release notes](https://github.com/wevm/viem/releases)
- [Commits](https://github.com/wevm/viem/compare/viem@2.21.14...viem@2.21.15)

---
updated-dependencies:
- dependency-name: viem
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -44,7 +44,7 @@
     "react-number-format": "^5.4.2",
     "styled-components": "^6.1.13",
     "use-debounce": "^10.0.3",
-    "viem": "^2.21.14",
+    "viem": "^2.21.15",
     "wagmi": "^2.12.14",
     "zod": "^3.23.8"
   },