chore: Update discovery artifacts (#1462)

## Deleted keys were detected in the following stable discovery artifacts:
sqladmin v1 https://github.com/googleapis/google-api-python-client/commit/cef24d829ab5be71563a2b668b8f6cf5dda2c8e4

## Deleted keys were detected in the following pre-stable discovery artifacts:
alertcenter v1beta1 https://github.com/googleapis/google-api-python-client/commit/70810a52c85c6d0d6f00d7afb41c8608261eaebc

## Discovery Artifact Change Summary:
feat(alertcenter): update the api https://github.com/googleapis/google-api-python-client/commit/70810a52c85c6d0d6f00d7afb41c8608261eaebc
feat(chat): update the api https://github.com/googleapis/google-api-python-client/commit/a577cd0b71951176bbf849c1f7f139127205da54
feat(cloudbuild): update the api https://github.com/googleapis/google-api-python-client/commit/9066056a8b106d441fb7686fe84359484d0d58bc
feat(content): update the api https://github.com/googleapis/google-api-python-client/commit/b123349da33c11c0172a8efb3fadef685a30e6e1
feat(displayvideo): update the api https://github.com/googleapis/google-api-python-client/commit/c525d726ee6cffdd4bc7afd69080d5e52bae83a0
feat(dns): update the api https://github.com/googleapis/google-api-python-client/commit/13436ccd2b835fda5cb86952ac4ea991ee8651d8
feat(eventarc): update the api https://github.com/googleapis/google-api-python-client/commit/6be3394a64a5eb509f68ef779680fd36837708ee
feat(file): update the api https://github.com/googleapis/google-api-python-client/commit/817a0e636771445a988ef479bd52740f754b901a
feat(monitoring): update the api https://github.com/googleapis/google-api-python-client/commit/bd32149f308467f0f659119587afc77dcec65b14
feat(people): update the api https://github.com/googleapis/google-api-python-client/commit/aa6b47df40c5289f33aef6fb6aa007df2d038e20
feat(retail): update the api https://github.com/googleapis/google-api-python-client/commit/d39f06e2d77034bc837604a41dd52c577f158bf2
feat(securitycenter): update the api https://github.com/googleapis/google-api-python-client/commit/999fab5178208639c9eef289f9f441052ed832fc
feat(speech): update the api https://github.com/googleapis/google-api-python-client/commit/3b2c0fa62b2a0c86bba1e97f1b18f93250dbd551
feat(sqladmin): update the api https://github.com/googleapis/google-api-python-client/commit/cef24d829ab5be71563a2b668b8f6cf5dda2c8e4
diff --git a/docs/dyn/sqladmin_v1beta4.flags.html b/docs/dyn/sqladmin_v1beta4.flags.html
index 1cee3b7..61b3099 100644
--- a/docs/dyn/sqladmin_v1beta4.flags.html
+++ b/docs/dyn/sqladmin_v1beta4.flags.html
@@ -79,7 +79,7 @@
 <p class="firstline">Close httplib2 connections.</p>
 <p class="toc_element">
   <code><a href="#list">list(databaseVersion=None, x__xgafv=None)</a></code></p>
-<p class="firstline">List all available database flags for Cloud SQL instances.</p>
+<p class="firstline">Lists all available database flags for Cloud SQL instances.</p>
 <h3>Method Details</h3>
 <div class="method">
     <code class="details" id="close">close()</code>
@@ -88,7 +88,7 @@
 
 <div class="method">
     <code class="details" id="list">list(databaseVersion=None, x__xgafv=None)</code>
-  <pre>List all available database flags for Cloud SQL instances.
+  <pre>Lists all available database flags for Cloud SQL instances.
 
 Args:
   databaseVersion: string, Database type and version you want to retrieve flags for. By default, this method returns flags for all database types and versions.
@@ -117,7 +117,7 @@
       &quot;maxValue&quot;: &quot;A String&quot;, # For *INTEGER* flags, the maximum allowed value.
       &quot;minValue&quot;: &quot;A String&quot;, # For *INTEGER* flags, the minimum allowed value.
       &quot;name&quot;: &quot;A String&quot;, # This is the name of the flag. Flag names always use underscores, not hyphens, for example: *max_allowed_packet*
-      &quot;requiresRestart&quot;: True or False, # Indicates whether changing this flag will trigger a database restart. Only applicable to Second Generation instances.
+      &quot;requiresRestart&quot;: True or False, # Indicates whether changing this flag will trigger a database restart.
       &quot;type&quot;: &quot;A String&quot;, # The type of the flag. Flags are typed to being *BOOLEAN*, *STRING*, *INTEGER* or *NONE*. *NONE* is used for flags which do not take a value, such as *skip_grant_tables*.
     },
   ],