Use CF 3.18.0

Author: mernst

pom.xml

@@ -71,7 +71,7 @@
     <dependency>
       <groupId>org.checkerframework</groupId>
       <artifactId>checker-qual</artifactId>
-      <version>3.17.0</version>
+      <version>3.18.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.errorprone</groupId>
@@ -601,7 +601,7 @@
                 <path>
                   <groupId>org.checkerframework</groupId>
                   <artifactId>checker</artifactId>
-                  <version>3.17.0</version>
+                  <version>3.18.0</version>
                 </path>
               </annotationProcessorPaths>
               <annotationProcessors>
@@ -619,7 +619,7 @@
         <dependency>
           <groupId>org.checkerframework</groupId>
           <artifactId>checker</artifactId>
-          <version>3.17.0</version>
+          <version>3.18.0</version>
         </dependency>
       </dependencies>
     </profile>

src/main/java/org/apache/commons/csv/CSVFormat.java

@@ -1233,7 +1233,6 @@ public static CSVFormat newFormat(final char delimiter) {
                 true);
     }
 
-    @SuppressWarnings("nullness:argument")  // Objects.toString(..., ...) needs @PolyNull (has it after CF 3.17.0)
     static @Nullable String @PolyNull [] toStringArray(final @Nullable Object @PolyNull [] values) {
         if (values == null) {
             return null;