add ref to Deployment (#2489)

Co-authored-by: Nevins Bartolomeo <nevins@sev.co>

github/Deployment.py

@@ -43,6 +43,14 @@ class Deployment(github.GithubObject.CompletableGithubObject):
         self._completeIfNotSet(self._id)
         return self._id.value
 
+    @property
+    def ref(self):
+        """
+        :type: string
+        """
+        self._completeIfNotSet(self._ref)
+        return self._ref.value
+
     @property
     def url(self):
         """
@@ -254,6 +262,7 @@ class Deployment(github.GithubObject.CompletableGithubObject):
     def _initAttributes(self):
         self._id = github.GithubObject.NotSet
         self._production_environment = github.GithubObject.NotSet
+        self._ref = github.GithubObject.NotSet
         self._transient_environment = github.GithubObject.NotSet
         self._url = github.GithubObject.NotSet
         self._sha = github.GithubObject.NotSet
@@ -275,6 +284,8 @@ class Deployment(github.GithubObject.CompletableGithubObject):
             self._production_environment = self._makeBoolAttribute(
                 attributes["production_environment"]
             )
+        if "ref" in attributes:  # pragma no branch
+            self._ref = self._makeStringAttribute(attributes["ref"])
         if "transient_environment" in attributes:  # pragma no branch
             self._transient_environment = self._makeBoolAttribute(
                 attributes["transient_environment"]

github/Deployment.pyi

@@ -30,6 +30,8 @@ class Deployment(CompletableGithubObject):
     @property
     def sha(self) -> str: ...
     @property
+    def ref(self) -> str: ...
+    @property
     def task(self) -> str: ...
     @property
     def payload(self) -> Dict[str, Any]: ...