[fix] warning: unknown enum constant When.MAYBE caused by missing JSR…

…305 implementation

This warning is caused by the javax.annotation.meta.When enum not being available to the runtime and org.springframework.lang.Nullable references this enum but it is not made available automatically.

htmx-spring-boot/pom.xml

@@ -48,6 +48,12 @@
             <artifactId>spring-boot-starter-thymeleaf</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <optional>true</optional>
+            <version>3.0.2</version>
+        </dependency>
     </dependencies>
 
 </project>