feat(androidpublisher): update the api

#### androidpublisher:v3

The following keys were added:
- resources.inappproducts.methods.update.parameters.allowMissing (Total Keys: 2)

docs/dyn/androidpublisher_v3.inappproducts.html

@@ -93,7 +93,7 @@ <h2>Instance Methods</h2>
   <code><a href="#patch">patch(packageName, sku, autoConvertMissingPrices=None, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Patches an in-app product (i.e. a managed product or a subscriptions).</p>
 <p class="toc_element">
-  <code><a href="#update">update(packageName, sku, autoConvertMissingPrices=None, body=None, x__xgafv=None)</a></code></p>
+  <code><a href="#update">update(packageName, sku, allowMissing=None, autoConvertMissingPrices=None, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Updates an in-app product (i.e. a managed product or a subscriptions).</p>
 <h3>Method Details</h3>
 <div class="method">
@@ -383,7 +383,7 @@ <h3>Method Details</h3>
 </div>
 
 <div class="method">
-    <code class="details" id="update">update(packageName, sku, autoConvertMissingPrices=None, body=None, x__xgafv=None)</code>
+    <code class="details" id="update">update(packageName, sku, allowMissing=None, autoConvertMissingPrices=None, body=None, x__xgafv=None)</code>
   <pre>Updates an in-app product (i.e. a managed product or a subscriptions).
 
 Args:
@@ -422,6 +422,7 @@ <h3>Method Details</h3>
   &quot;trialPeriod&quot;: &quot;A String&quot;, # Trial period, specified in ISO 8601 format. Acceptable values are anything between P7D (seven days) and P999D (999 days).
 }
 
+  allowMissing: boolean, If set to true, and the in-app product with the given package_name and sku doesn&#x27;t exist, the in-app product will be created.
   autoConvertMissingPrices: boolean, If true the prices for all regions targeted by the parent app that don&#x27;t have a price specified for this in-app product will be auto converted to the target currency based on the default price. Defaults to false.
   x__xgafv: string, V1 error format.
     Allowed values

googleapiclient/discovery_cache/documents/androidpublisher.v3.json

@@ -1873,6 +1873,11 @@
             "sku"
           ],
           "parameters": {
+            "allowMissing": {
+              "description": "If set to true, and the in-app product with the given package_name and sku doesn't exist, the in-app product will be created.",
+              "location": "query",
+              "type": "boolean"
+            },
             "autoConvertMissingPrices": {
               "description": "If true the prices for all regions targeted by the parent app that don't have a price specified for this in-app product will be auto converted to the target currency based on the default price. Defaults to false.",
               "location": "query",
@@ -2676,7 +2681,7 @@
       }
     }
   },
-  "revision": "20210724",
+  "revision": "20210728",
   "rootUrl": "https://androidpublisher.googleapis.com/",
   "schemas": {
     "Apk": {