Fix Mail dependencies

* Upgrade to Spring Boot `3.0.3-SNAPSHOT`
* Fix generated packaging for samples with Spring Boot plugin
* Regenerate POMs

basic/http/pom.xml

@@ -80,9 +80,9 @@
       <scope>compile</scope>
     </dependency>
     <dependency>
-      <groupId>com.sun.mail</groupId>
+      <groupId>org.eclipse.angus</groupId>
       <artifactId>jakarta.mail</artifactId>
-      <version>2.0.1</version>
+      <version>1.0.0</version>
       <scope>compile</scope>
     </dependency>
     <dependency>