Refactor AddDependencyKeys to be a generic method

Updated AddDependencyKeys method signature from
`private static void AddDependencyKeys(object value, HashSet<string> dependencyKeys)`
to
`private static void AddDependencyKeys<T>(T value, HashSet<string> dependencyKeys)`.

This change enhances flexibility and type safety by allowing the method to accept any type specified at the time of the method call.

src/XperienceCommunity.DataRepository/Builders/CacheDependencyBuilder.cs

@@ -24,9 +24,8 @@ public sealed class CacheDependencyBuilder : ICacheDependencyBuilder
         }
 
 
-        private static void AddDependencyKeys(object value, HashSet<string> dependencyKeys)
+        private static void AddDependencyKeys<T>(T value, HashSet<string> dependencyKeys)
         {
-
             switch (value)
             {
                 case null: