[Website] Add ADBC 0.9.0 post (#462)

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+---
+layout: post
+title: "Apache Arrow ADBC 0.9.0 (Libraries) Release"
+date: "2024-01-08 00:00:00"
+author: pmc
+categories: [release]
+---
+<!--
+{% comment %}
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
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+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
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+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
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+{% endcomment %}
+-->
+
+The Apache Arrow team is pleased to announce the 0.9.0 release of
+the Apache Arrow ADBC libraries. This covers includes [**34
+resolved issues**][1] from [**16 distinct contributors**][2].
+
+This is a release of the **libraries**, which are at version
+0.9.0.  The **API specification** is versioned separately and is
+at version 1.1.0.
+
+The release notes below are not exhaustive and only expose selected
+highlights of the release. Many other bugfixes and improvements have
+been made: we refer you to the [complete changelog][3].
+
+## Release Highlights
+
+The C#/.NET implementation is gearing up for a proper release and has had
+various bugfixes in the core libraries, the drivers, and the ADO.NET wrapper.
+
+The Go implementation now supports executing more methods (like
+`ConnectionCommit`) when importing a native C/C++ driver.
+
+The PostgreSQL driver can now write decimal values and dictionary-encoded
+string/bytestring.  Also, `AdbcConnectionGetTableSchema` was fixed to handle
+the catalog and schema parameters correctly, and the driver now tries to
+provide a row count for non-select queries.
+
+The Python bindings now accept a PyArrow Dataset as a data source for bulk
+ingestion.  The new [PyCapsule interface][pycapsule] is supported.  It is
+possible to build the Python packages via CMake, which simplifies handling the
+mixed-C++-and-Python builds.
+
+The R bindings reference-count objects to try to detect improper usage and
+avoid crashes.
+
+The Snowflake driver properly handles escaping and case sensitivity in various
+metadata methods.  It also now supports `StatementExecuteSchema`.
+
+The Javadoc API reference is now included in the documentation.
+
+[pycapsule]: https://arrow.apache.org/docs/format/CDataInterface/PyCapsuleInterface.html
+
+## Contributors
+
+```
+$ git shortlog --perl-regexp --author='^((?!dependabot\[bot\]).*)$' -sn apache-arrow-adbc-0.8.0..apache-arrow-adbc-0.9.0
+    24	David Li
+    10	Curt Hagenlocher
+    10	Dewey Dunnington
+     7	davidhcoe
+     4	William Ayd
+     3	Ryan Syed
+     3	vleslief-ms
+     2	Daniel Espinosa
+     2	Joel Lubinitsky
+     2	Sutou Kouhei
+     1	AnithaPanduranganMS
+     1	Joris Van den Bossche
+     1	Matt Topol
+     1	Ruoxuan Wang
+     1	William
+     1	rtadepalli
+```
+
+## Roadmap
+
+The next release may increase the minimum required C++ revision to C++17,
+which will line up with the mainline Arrow project
+([GH-1431](https://github.com/apache/arrow-adbc/issues/1431)).
+
+## Getting Involved
+
+We welcome questions and contributions from all interested.  Issues
+can be filed on [GitHub][4], and questions can be directed to GitHub
+or the [Arrow mailing lists][5].
+
+[1]: https://github.com/apache/arrow-adbc/milestone/13
+[2]: #contributors
+[3]: https://github.com/apache/arrow-adbc/blob/apache-arrow-adbc-0.9.0/CHANGELOG.md
+[4]: https://github.com/apache/arrow-adbc/issues
+[5]: {% link community.md %}