Update protobuf version

java/core/pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.protobuf</groupId>
     <artifactId>protobuf-parent</artifactId>
-    <version>3.9.1</version>
+    <version>3.10.0-rc-1</version>
   </parent>
 
   <artifactId>protobuf-java</artifactId>

java/lite/pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.protobuf</groupId>
     <artifactId>protobuf-parent</artifactId>
-    <version>3.9.1</version>
+    <version>3.10.0-rc-1</version>
   </parent>
 
   <artifactId>protobuf-javalite</artifactId>

java/util/pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.protobuf</groupId>
     <artifactId>protobuf-parent</artifactId>
-    <version>3.9.1</version>
+    <version>3.10.0-rc-1</version>
   </parent>
 
   <artifactId>protobuf-java-util</artifactId>

php/ext/google/protobuf/package.xml

@@ -10,8 +10,8 @@
   <email>protobuf-opensource@google.com</email>
   <active>yes</active>
  </lead>
- <date>2019-09-04</date>
- <time>13:24:25</time>
+ <date>2019-09-05</date>
+ <time>10:12:46</time>
  <version>
   <release>3.10.0RC1</release>
   <api>3.10.0</api>
@@ -403,5 +403,19 @@ G  A release.
    <license uri="https://opensource.org/licenses/BSD-3-Clause">3-Clause BSD License</license>
    <notes>GA release.</notes>
   </release>
+  <release>
+   <version>
+    <release>3.10.0RC1</release>
+    <api>3.10.0</api>
+   </version>
+   <stability>
+    <release>beta</release>
+    <api>beta</api>
+   </stability>
+   <date>2019-09-05</date>
+   <time>10:12:46</time>
+   <license uri="https://opensource.org/licenses/BSD-3-Clause">3-Clause BSD License</license>
+   <notes>GA release.</notes>
+  </release>
  </changelog>
 </package>