audit: replace deprecated collect fee functions (#176)

As reported by @0xEniotna [L-04], 

Ekubo now has a specific function for collecting fees.

https://github.com/EkuboProtocol/abis/blob/0b1368f6bbce61b4d7dbf4a32b3fbc4ddf3b77d7/src/interfaces/positions.cairo#L87

contracts/src/exchanges/ekubo/launcher.cairo

@@ -158,6 +158,7 @@ mod EkuboLauncher {
     use ekubo::interfaces::core::{ICoreDispatcher, ICoreDispatcherTrait, ILocker};
     use ekubo::interfaces::core::{PoolKey};
     use ekubo::interfaces::erc20::{IERC20Dispatcher, IERC20DispatcherTrait};
+    use ekubo::interfaces::positions::{IPositionsDispatcher, IPositionsDispatcherTrait};
     use ekubo::types::bounds::{Bounds};
     use ekubo::types::{i129::i129};
     use openzeppelin::token::erc20::interface::{ERC20ABIDispatcher, ERC20ABIDispatcherTrait};
@@ -168,8 +169,7 @@ mod EkuboLauncher {
     use unruggable::errors;
     use unruggable::exchanges::ekubo::errors::{NOT_POSITION_OWNER};
     use unruggable::exchanges::ekubo::interfaces::{
-        ITokenRegistryDispatcher, IPositionsDispatcher, IPositionsDispatcherTrait,
-        IOwnedNFTDispatcher, IOwnedNFTDispatcherTrait,
+        ITokenRegistryDispatcher, IOwnedNFTDispatcher, IOwnedNFTDispatcherTrait,
     };
     use unruggable::token::interface::{
         IUnruggableMemecoinDispatcher, IUnruggableMemecoinDispatcherTrait
@@ -398,7 +398,7 @@ mod EkuboLauncher {
                         extension: pool_key.extension,
                     };
                     let bounds = Bounds { lower: bounds.lower, upper: bounds.upper, };
-                    positions.withdraw(id, pool_key, bounds, 0, 0, 0, true);
+                    positions.collect_fees(id, pool_key, bounds);
 
                     // Transfer to recipient
                     let mut return_data = Default::default();