refactor: move up reporter function

Signed-off-by: Pablo Maldonado <pablo@umaproject.org>

src/oracles/CoinbaseOracle.sol

@@ -24,6 +24,14 @@ contract CoinbaseOracle is IAggregatorV3SourceCoinbase {
 
     event PricePushed(string indexed ticker, uint80 indexed roundId, int256 price, uint256 timestamp);
 
+    /**
+     * @notice Returns the address of the reporter.
+     * @return The address of the reporter.
+     */
+    function reporter() public view virtual returns (address) {
+        return 0xfCEAdAFab14d46e20144F48824d0C09B1a03F2BC;
+    }
+
     /**
      * @notice Returns the latest round data for a given ticker.
      * @param ticker The ticker symbol to retrieve the data for.
@@ -103,12 +111,4 @@ contract CoinbaseOracle is IAggregatorV3SourceCoinbase {
         bytes32 hash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", keccak256(message)));
         return ecrecover(hash, v, r, s);
     }
-
-    /**
-     * @notice Returns the address of the reporter.
-     * @return The address of the reporter.
-     */
-    function reporter() public view virtual returns (address) {
-        return 0xfCEAdAFab14d46e20144F48824d0C09B1a03F2BC;
-    }
 }