chore: Update discovery artifacts (#1416)

## Discovery Artifact Change Summary:
feat(bigqueryreservation): update the api 63c00f6
feat(firebaserules): update the api 7b20004
feat(iap): update the api 18550fd
feat(managedidentities): update the api d222001

Author: yoshi-code-bot

docs/dyn/bigqueryreservation_v1beta1.projects.locations.reservations.assignments.html

@@ -92,6 +92,9 @@ <h2>Instance Methods</h2>
 <p class="toc_element">
   <code><a href="#move">move(name, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Moves an assignment under a new reservation. This differs from removing an existing assignment and recreating a new one by providing a transactional change that ensures an assignee always has an associated reservation.</p>
+<p class="toc_element">
+  <code><a href="#patch">patch(name, body=None, updateMask=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Updates an existing assignment. Only the `priority` field can be updated.</p>
 <h3>Method Details</h3>
 <div class="method">
     <code class="details" id="close">close()</code>
@@ -221,4 +224,37 @@ <h3>Method Details</h3>
 }</pre>
 </div>
 
+<div class="method">
+    <code class="details" id="patch">patch(name, body=None, updateMask=None, x__xgafv=None)</code>
+  <pre>Updates an existing assignment. Only the `priority` field can be updated.
+
+Args:
+  name: string, Output only. Name of the resource. E.g.: `projects/myproject/locations/US/reservations/team1-prod/assignments/123`. (required)
+  body: object, The request body.
+    The object takes the form of:
+
+{ # A Assignment allows a project to submit jobs of a certain type using slots from the specified reservation.
+  &quot;assignee&quot;: &quot;A String&quot;, # The resource which will use the reservation. E.g. `projects/myproject`, `folders/123`, or `organizations/456`.
+  &quot;jobType&quot;: &quot;A String&quot;, # Which type of jobs will use the reservation.
+  &quot;name&quot;: &quot;A String&quot;, # Output only. Name of the resource. E.g.: `projects/myproject/locations/US/reservations/team1-prod/assignments/123`.
+  &quot;state&quot;: &quot;A String&quot;, # Output only. State of the assignment.
+}
+
+  updateMask: string, Standard field mask for the set of fields to be updated.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # A Assignment allows a project to submit jobs of a certain type using slots from the specified reservation.
+  &quot;assignee&quot;: &quot;A String&quot;, # The resource which will use the reservation. E.g. `projects/myproject`, `folders/123`, or `organizations/456`.
+  &quot;jobType&quot;: &quot;A String&quot;, # Which type of jobs will use the reservation.
+  &quot;name&quot;: &quot;A String&quot;, # Output only. Name of the resource. E.g.: `projects/myproject/locations/US/reservations/team1-prod/assignments/123`.
+  &quot;state&quot;: &quot;A String&quot;, # Output only. State of the assignment.
+}</pre>
+</div>
+
 </body></html>