fix: Return back sepolia.json (#1165)

## What ❔

Return back token config for sepolia

## Why ❔

It was accidentally removed

## Checklist

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- [ ] PR title corresponds to the body of PR (we generate changelog
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- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
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etc/tokens/sepolia.json

@@ -0,0 +1,14 @@
+[
+  {
+    "name": "DAI",
+    "symbol": "DAI",
+    "decimals": 18,
+    "address": "0x35EfF6eA96571ff475136117FdD92A9ba25b1f37"
+  },
+  {
+    "name": "Wrapped Ether",
+    "symbol": "WETH",
+    "decimals": 18,
+    "address": "0x7b79995e5f793A07Bc00c21412e50Ecae098E7f9"
+  }
+]