Add ExpiresAt field to SSH Key object (gitlab4j#857)

Co-authored-by: Vladimir Krumov <vladimir.krumov@paysafe.com>

Author: mmaker1234

src/main/java/org/gitlab4j/api/models/SshKey.java

@@ -12,6 +12,7 @@ public class SshKey {
     private String title;
     private String key;
     private Date createdAt;
+    private Date expiresAt;
 
     private Long userId;
 
@@ -47,6 +48,14 @@ public void setCreatedAt(Date createdAt) {
         this.createdAt = createdAt;
     }
 
+    public Date getExpiresAt() {
+        return expiresAt;
+    }
+
+    public void setExpiresAt(Date expiresAt) {
+        this.expiresAt = expiresAt;
+    }
+
     @JsonIgnore
     public Long getUserId() {
         return userId;

src/test/resources/org/gitlab4j/api/sshkey.json

@@ -1,6 +1,7 @@
-{
-  "id": 1,
-  "title": "Public key",
-  "key": "ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAiPWx6WM4lhHNedGfBpPJNPpZ7yKu+dnn1SJejgt4596k6YjzGGphH2TUxwKzxcKDKKezwkpfnxPkSMkuEspGRt/aZZ9wa++Oi7Qkr8prgHc4soW6NUlfDzpvZK2H5E7eQaSeP3SAwGmQKUFHCddNaP0L+hM7zhFNzjFvpaMgJw0=",
-  "created_at": "2014-08-01T14:47:39.080Z"
+{
+  "id": 1,
+  "title": "Public key",
+  "key": "ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAiPWx6WM4lhHNedGfBpPJNPpZ7yKu+dnn1SJejgt4596k6YjzGGphH2TUxwKzxcKDKKezwkpfnxPkSMkuEspGRt/aZZ9wa++Oi7Qkr8prgHc4soW6NUlfDzpvZK2H5E7eQaSeP3SAwGmQKUFHCddNaP0L+hM7zhFNzjFvpaMgJw0=",
+  "created_at": "2014-08-01T14:47:39.080Z",
+  "expires_at": "2015-08-01T14:47:39.080Z"
 }