Replace Micronaut nullability annotations with JSpecify annotations (#571)

* Initial plan

* Replace Micronaut nullability annotations with JSpecify annotations

Co-authored-by: sdelamo <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: sdelamo <[email protected]>

Author: Copilot

email-amazon-ses/src/main/java/io/micronaut/email/ses/AsyncSesEmailSender.java

@@ -16,7 +16,7 @@
 package io.micronaut.email.ses;
 
 import io.micronaut.context.annotation.Requires;
-import io.micronaut.core.annotation.NonNull;
+import org.jspecify.annotations.NonNull;
 import io.micronaut.core.async.annotation.SingleResult;
 import io.micronaut.email.AsyncTransactionalEmailSender;
 import io.micronaut.email.Email;

email-amazon-ses/src/main/java/io/micronaut/email/ses/SesEmailComposer.java

@@ -15,7 +15,7 @@
  */
 package io.micronaut.email.ses;
 
-import io.micronaut.core.annotation.NonNull;
+import org.jspecify.annotations.NonNull;
 import io.micronaut.core.util.CollectionUtils;
 import io.micronaut.core.util.StringUtils;
 import io.micronaut.email.BodyType;

email-amazon-ses/src/main/java/io/micronaut/email/ses/SesEmailSender.java

@@ -16,7 +16,7 @@
 package io.micronaut.email.ses;
 
 import io.micronaut.context.annotation.Requires;
-import io.micronaut.core.annotation.NonNull;
+import org.jspecify.annotations.NonNull;
 import io.micronaut.email.Email;
 import io.micronaut.email.EmailException;
 import io.micronaut.email.TransactionalEmailSender;

email-javamail-composer/src/main/java/io/micronaut/email/javamail/composer/DefaultMessageComposer.java

@@ -15,8 +15,8 @@
  */
 package io.micronaut.email.javamail.composer;
 
-import io.micronaut.core.annotation.NonNull;
-import io.micronaut.core.annotation.Nullable;
+import org.jspecify.annotations.NonNull;
+import org.jspecify.annotations.Nullable;
 import io.micronaut.core.util.CollectionUtils;
 import io.micronaut.core.util.StringUtils;
 import io.micronaut.email.Attachment;

email-javamail-composer/src/main/java/io/micronaut/email/javamail/composer/MessageComposer.java

@@ -16,7 +16,7 @@
 package io.micronaut.email.javamail.composer;
 
 import io.micronaut.context.annotation.DefaultImplementation;
-import io.micronaut.core.annotation.NonNull;
+import org.jspecify.annotations.NonNull;
 import io.micronaut.email.Email;
 import jakarta.mail.Message;
 import jakarta.mail.MessagingException;

email-javamail/src/main/java/io/micronaut/email/javamail/sender/DefaultSessionProvider.java

@@ -17,8 +17,8 @@
 
 import io.micronaut.context.annotation.Requires;
 import io.micronaut.context.annotation.Secondary;
-import io.micronaut.core.annotation.NonNull;
-import io.micronaut.core.annotation.Nullable;
+import org.jspecify.annotations.NonNull;
+import org.jspecify.annotations.Nullable;
 import jakarta.inject.Singleton;
 import jakarta.mail.Authenticator;
 import jakarta.mail.Session;

email-javamail/src/main/java/io/micronaut/email/javamail/sender/JavaMailConfiguration.java

@@ -15,7 +15,7 @@
  */
 package io.micronaut.email.javamail.sender;
 
-import io.micronaut.core.annotation.Nullable;
+import org.jspecify.annotations.Nullable;
 import io.micronaut.core.util.Toggleable;
 import java.util.Map;
 

email-javamail/src/main/java/io/micronaut/email/javamail/sender/JavaMailConfigurationProperties.java

@@ -16,7 +16,7 @@
 package io.micronaut.email.javamail.sender;
 
 import io.micronaut.context.annotation.ConfigurationProperties;
-import io.micronaut.core.annotation.Nullable;
+import org.jspecify.annotations.Nullable;
 import io.micronaut.core.convert.format.MapFormat;
 import java.util.Map;
 

email-javamail/src/main/java/io/micronaut/email/javamail/sender/JavaxEmailComposer.java

@@ -15,7 +15,7 @@
  */
 package io.micronaut.email.javamail.sender;
 
-import io.micronaut.core.annotation.NonNull;
+import org.jspecify.annotations.NonNull;
 import io.micronaut.email.Email;
 import io.micronaut.email.EmailComposer;
 import io.micronaut.email.EmailException;

email-javamail/src/main/java/io/micronaut/email/javamail/sender/JavaxEmailSender.java

@@ -17,7 +17,7 @@
 
 import io.micronaut.context.annotation.Requires;
 import io.micronaut.context.annotation.Secondary;
-import io.micronaut.core.annotation.NonNull;
+import org.jspecify.annotations.NonNull;
 import io.micronaut.email.AbstractTransactionalEmailSender;
 import io.micronaut.email.Email;
 import io.micronaut.email.EmailException;