fix: switch price target from FMP to yfinance

FMP provider requires a paid API key. yfinance provides
targetMeanPrice in ticker.info for free.

openbb_service.py

@@ -104,13 +104,15 @@ async def get_financials(symbol: str) -> dict:
 
 
 async def get_price_target(symbol: str) -> float | None:
+    """Get consensus analyst price target via yfinance."""
+    import yfinance as yf
+
+    def _fetch() -> float | None:
+        t = yf.Ticker(symbol)
+        return t.info.get("targetMeanPrice")
+
     try:
-        result = await asyncio.to_thread(
-            obb.equity.estimates.price_target, symbol, provider="fmp"
-        )
-        items = _to_dicts(result)
-        if items:
-            return items[0].get("adj_price_target") or items[0].get("price_target")
+        return await asyncio.to_thread(_fetch)
     except Exception:
         logger.warning("Failed to get price target for %s", symbol, exc_info=True)
     return None