Use consistent modifier order

Update code to use a consistent modifier order that aligns with that
used in the "Java Language specification".

Issue gh-8945

web/src/test/java/org/springframework/security/web/authentication/switchuser/SwitchUserFilterTests.java

@@ -62,7 +62,7 @@ import static org.mockito.Mockito.verify;
  */
 public class SwitchUserFilterTests {
 
-	private final static List<GrantedAuthority> ROLES_12 = AuthorityUtils.createAuthorityList("ROLE_ONE", "ROLE_TWO");
+	private static final List<GrantedAuthority> ROLES_12 = AuthorityUtils.createAuthorityList("ROLE_ONE", "ROLE_TWO");
 
 	@Rule
 	public ExpectedException thrown = ExpectedException.none();