fix some annotations

Author: ThoSap

operator/src/main/java/it/aboutbits/postgresql/crd/grant/GrantReconciler.java

@@ -114,6 +114,7 @@ public UpdateControl<Grant> reconcile(
         return updateControl;
     }
 
+    @SuppressWarnings("java:S3776")
     private UpdateControl<Grant> reconcileInTransaction(
             DSLContext tx,
             Grant resource,

operator/src/main/java/it/aboutbits/postgresql/crd/grant/GrantService.java

@@ -41,7 +41,7 @@ public class GrantService {
     /// @param tx       The DSLContext for database operations.
     /// @param resource The Grant resource containing the specification details.
     /// @return A map with object names as keys and lists of GrantPrivilege as values.
-    @SuppressWarnings("MethodLength")
+    @SuppressWarnings("checkstyle:MethodLength")
     public Map<String, Set<GrantPrivilege>> determineCurrentObjectPrivileges(
             DSLContext tx,
             Grant resource
@@ -214,7 +214,7 @@ public Map<String, Set<GrantPrivilege>> determineCurrentObjectPrivileges(
     /// @param resource the Grant object containing specifications about the target database objects and privileges
     /// @return a map where the keys represent object names and the values indicate ownership status,
     /// or `null` if the object does not exist
-    @SuppressWarnings("MethodLength")
+    @SuppressWarnings({"checkstyle:MethodLength", "java:S3776"})
     public Map<String, @Nullable Boolean> determineObjectExistenceAndOwnership(
             DSLContext tx,
             Grant resource

operator/src/main/java/it/aboutbits/postgresql/crd/role/RoleReconciler.java

@@ -26,6 +26,7 @@
 import org.jspecify.annotations.Nullable;
 
 import java.util.List;
+import java.util.Objects;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
@@ -340,7 +341,7 @@ private boolean isReferencedBy(
             return false;
         }
 
-        var ref = spec.getPasswordSecretRef();
+        var ref = Objects.requireNonNull(spec.getPasswordSecretRef());
         var refName = ref.getName();
         var refNamespace = getResourceNamespaceOrOwn(role, ref.getNamespace());