Update protobuf version

php/ext/google/protobuf/package.xml

@@ -10,8 +10,8 @@
   <email>protobuf-opensource@google.com</email>
   <active>yes</active>
  </lead>
- <date>2022-04-04</date>
- <time>11:10:23</time>
+ <date>2022-04-05</date>
+ <time>17:06:47</time>
  <version>
   <release>3.20.1RC1</release>
   <api>3.20.1</api>
@@ -1268,5 +1268,20 @@ G  A release.
    <notes>
    </notes>
   </release>
+  <release>
+   <version>
+    <release>3.20.1RC1</release>
+    <api>3.20.1</api>
+   </version>
+   <stability>
+    <release>beta</release>
+    <api>beta</api>
+   </stability>
+   <date>2022-04-05</date>
+   <time>17:06:47</time>
+   <license uri="https://opensource.org/licenses/BSD-3-Clause">BSD-3-Clause</license>
+   <notes>
+   </notes>
+  </release>
  </changelog>
 </package>