chore: suppress spotbugs warnings for AutoMerge

Author: Jesko Steinberg

src/main/java/org/kohsuke/github/GHPullRequest.java

@@ -659,6 +659,7 @@ public static class AutoMerge {
          *
          * @return the {@linkplain GHUser}
          */
+        @SuppressFBWarnings(value = { "EI_EXPOSE_REP" }, justification = "Expected behavior")
         public GHUser getEnabledBy() {
             return enabled_by;
         }
@@ -668,6 +669,7 @@ public GHUser getEnabledBy() {
          *
          * @return the {@linkplain MergeMethod}
          */
+        @SuppressFBWarnings(value = "UWF_UNWRITTEN_FIELD", justification = "Field comes from JSON deserialization")
         public MergeMethod getMergeMethod() {
             return merge_method;
         }
@@ -677,6 +679,7 @@ public MergeMethod getMergeMethod() {
          *
          * @return the title of the commit
          */
+        @SuppressFBWarnings(value = "UWF_UNWRITTEN_FIELD", justification = "Field comes from JSON deserialization")
         public String getCommitTitle() {
             return commit_title;
         }
@@ -686,6 +689,7 @@ public String getCommitTitle() {
          *
          * @return the message of the commit
          */
+        @SuppressFBWarnings(value = "UWF_UNWRITTEN_FIELD", justification = "Field comes from JSON deserialization")
         public String getCommitMessage() {
             return commit_message;
         }