Fix deprecated RoleHierarchyImpl.fromHierarchy() API usage

Replace deprecated RoleHierarchyImpl.fromHierarchy() with the new constructor
and setHierarchy() method to eliminate compilation warnings.

- Changed from: RoleHierarchyImpl.fromHierarchy(hierarchyString)
- Changed to: new RoleHierarchyImpl() + setHierarchy(hierarchyString)
- All tests pass, functionality unchanged

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: devondragon

src/main/java/com/digitalsanctuary/spring/user/security/WebSecurityConfig.java

@@ -266,7 +266,8 @@ public RoleHierarchy roleHierarchy() {
 			log.error("WebSecurityConfig.roleHierarchy: rolesAndPrivilegesConfig.getRoleHierarchyString() is null!");
 			return null;
 		}
-		RoleHierarchyImpl roleHierarchy = RoleHierarchyImpl.fromHierarchy(rolesAndPrivilegesConfig.getRoleHierarchyString());
+		RoleHierarchyImpl roleHierarchy = new RoleHierarchyImpl();
+		roleHierarchy.setHierarchy(rolesAndPrivilegesConfig.getRoleHierarchyString());
 		log.debug("WebSecurityConfig.roleHierarchy: roleHierarchy: {}", roleHierarchy.toString());
 		return roleHierarchy;
 	}