fix: strategy manager gap (#1508)

**Motivation:**

Incorrect gap, off by one.

**Modifications:**

- Updated SM gap.

**Result:**

Correct SM gap.

Author: 0xClandestine

src/contracts/core/StrategyManagerStorage.sol

@@ -104,5 +104,5 @@ abstract contract StrategyManagerStorage is IStrategyManager {
      * variables without shifting down storage in the inheritance chain.
      * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
      */
-    uint256[31] private __gap;
+    uint256[32] private __gap;
 }

src/test/integration/users/AVS.t.sol

@@ -38,6 +38,7 @@ contract AVS is Logger, IAllocationManagerTypes, IAVSRegistrar {
     IStrategyManager immutable strategyManager;
     IStrategyFactory immutable strategyFactory;
     TimeMachine immutable timeMachine;
+    IKeyRegistrar immutable keyRegistrar;
     string _NAME;
 
     uint32 totalOperatorSets;
@@ -50,6 +51,7 @@ contract AVS is Logger, IAllocationManagerTypes, IAVSRegistrar {
         strategyManager = deployer.strategyManager();
         strategyFactory = deployer.strategyFactory();
         timeMachine = deployer.timeMachine();
+        keyRegistrar = deployer.keyRegistrar();
         _NAME = name;
         cheats.label(address(this), NAME_COLORED());
     }