[docs] Announce new committers (apache#2507)

* [docs] Announce new committers

* Update doc/content/en/blog/news/new-pmc-michael-a-smith.md

Co-authored-by: Michael A. Smith <michael@smith-li.com>

---------

Co-authored-by: Michael A. Smith <michael@smith-li.com>

doc/content/en/blog/news/new-committer-christophe-le-saec.md

@@ -0,0 +1,41 @@
+---
+title: "New committer: Christophe Le Saec"
+linkTitle: "New committer: Christophe Le Saec"
+date: 2023-08-09
+---
+
+<!--
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+   https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+
+-->
+
+The Project Management Committee (PMC) for Apache Avro has invited Christophe
+Le Saec to become a committer and we are pleased to announce that
+he has accepted.
+
+Christophe definitely puts in the work and, has an impressive breadth of 
+knowledge about the languages of the Avro SDK!
+
+As an ASF project, we tend to be very conservative about making changes, and
+Christophe brings in fresh ideas and very quickly proposes concrete 
+implementations to prove them.  He has a good understanding of Avro, the
+motivation to move things forward, and the expertise to make changes!  At the
+same time, he's easy to talk to and flexible in coming to a consensus.
+
+Thanks for all your hard work!

doc/content/en/blog/news/new-committer-oscar-westra-van-holthe-kind.md

@@ -0,0 +1,41 @@
+---
+title: "New committer: Oscar Westra van Holthe - Kind"
+linkTitle: "New committer: Oscar Westra van Holthe - Kind"
+date: 2023-08-09
+---
+
+<!--
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+   https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+
+-->
+
+The Project Management Committee (PMC) for Apache Avro has invited Oscar
+Westra van Holthe - Kind to become a committer and we are pleased to announce that
+he has accepted.
+
+Oscar has done some really solid work on the IDL and JavaCC parts of the Java
+SDK.  We trust his work and think it's exceptionally high quality.  From the 
+start, he has already doing much of the work of a committer, demonstrated by
+his continuous presence in commenting JIRA, reviewing PRs as well as 
+encouraging and insightful words on the mailing list.
+
+As a bonus, in his spare time, Oscar also maintains the IntelliJ plugin for
+[IDL support](https://plugins.jetbrains.com/plugin/15728-apache-avro-idl-schema-support)!
+
+Thanks for all your hard work, and welcome!

doc/content/en/blog/news/new-pmc-michael-a-smith.md

@@ -0,0 +1,34 @@
+---
+title: "New PMC member: Michael A. Smith"
+linkTitle: "New PMC member: Michael A. Smith"
+date: 2023-08-09
+---
+
+<!--
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+   https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+
+-->
+
+The Project Management Committee (PMC) for Apache Avro has invited Michael A.
+Smith to the PMC and we are pleased to announce that he has accepted.
+
+Notably, Michael has taken a leadership role in ensuring the quality of the
+Python SDK, lending his expertise to ensure that Avro has a place in the 
+python community, while keeping our implementation up-to-date with standards
+and modern versions.  It's not an easy task, and we appreciate all he does!