DOCSP-41360: v5.1.2 patch release (#42)

(cherry picked from commit a848c18)

Author: rustagir

snooty.toml

@@ -16,7 +16,7 @@ toc_landing_pages = [
 driver-short = "Java Reactive Streams driver"
 driver-long = "MongoDB Java Reactive Streams Driver"
 version = "5.1"
-full-version = "{+version+}.1"
+full-version = "{+version+}.2"
 api = "https://mongodb.github.io/mongo-java-driver/{+version+}/apidocs"
 rs-docs = "https://www.reactive-streams.org/reactive-streams-1.0.4-javadoc/org/reactivestreams"
 driver-source-gh = "https://github.com/mongodb/mongo-java-driver"

source/whats-new.txt

@@ -20,9 +20,21 @@ What's New
 Learn about new features, improvements, and fixes introduced in the
 following versions of the {+driver-long+}:
 
+* :ref:`Version 5.1.2 <javars-version-5.1.2>`
 * :ref:`Version 5.1.1 <javars-version-5.1.1>`
 * :ref:`Version 5.1 <javars-version-5.1>`
 
+.. _javars-version-5.1.2:
+
+What's New in 5.1.2
+-------------------
+
+The 5.1.2 driver patch release includes the following changes:
+
+- Fixes an issue that prevents the driver from encoding and
+  decoding concrete classes that extend generic base classes, in cases
+  that you specify the base class as the generic type of the ``MongoCollection`` instance.
+
 .. _javars-version-5.1.1:
 
 What's New in 5.1.1