Update NEWS and release steps after 1.29.1 release (#1809)

* update NEWS for 1.29.1

* clarify branch used to generate announcement text

Author: kevinAlbs

NEWS

@@ -1,3 +1,17 @@
+libmongoc 1.29.1
+================
+
+Fixes:
+
+  * Assert session is consistent with client in `mongoc_bulkwrite_set_session`.
+
+Thanks to everyone who contributed to the development of this release.
+
+  * Jeremy Mikola
+  * Kevin Albertson
+
+
+
 libmongoc 1.29.0
 ================
 
@@ -29,6 +43,7 @@ Thanks to everyone who contributed to the development of this release.
   * Andreas Braun
   * Joshua Siegel
 
+
 libmongoc 1.28.1
 ================
 

docs/dev/releasing.rst

@@ -361,7 +361,7 @@ Publish Additional Artifacts
 
 
 .. warning::
-   The below steps should be run using the ``master`` branch, regardless of
+   This step should be run using the ``master`` branch, regardless of
    which branch is used for the release.
 
 We publish a release archive that contains a snapshot of the repository and some
@@ -440,6 +440,7 @@ __ https://www.mongodb.com/community/forums/c/announcements/driver-releases/110
 
 To generate the release template text, use the following::
 
+   $ git checkout $RELEASE_BRANCH
    $ python $CDRIVER_TOOLS/release.py announce -t community $NEW_VERSION
 
 Update/fix-up the generated text for the new release and publish the new post.

src/libbson/NEWS

@@ -1,3 +1,18 @@
+libbson 1.29.1
+==============
+
+Fixes:
+
+  * Fix result of `bson_strerror_r` on macOS.
+  * Fix max length string handling `bson_value_copy`.
+
+
+Thanks to everyone who contributed to the development of this release.
+
+  * Kevin Albertson
+
+
+
 libbson 1.29.0
 ==============