update CHANGELOG and bump version to 5.3.2

Author: beniwohli

CHANGELOG.asciidoc

@@ -25,14 +25,21 @@ https://github.com/elastic/apm-agent-python/compare/v5.3.1\...master[Check the d
 // Unreleased changes go here
 // When the next release happens, nest these changes under the "Python Agent version 5.x" heading
 
-[float]
-===== Bug fixes
 
- * Added support for IPv6 address format when parsing urls {pull}649[#649]
 
 [[release-notes-5.x]]
 === Python Agent version 5.x
 
+[[release-notes-5.3.2]]
+==== v5.3.2
+
+https://github.com/elastic/apm-agent-python/compare/v5.3.1\...v5.3.2[Check the diff]
+
+[float]
+===== Bug fixes
+
+ * Added support for IPv6 address format when parsing urls {pull}649[#649]
+
 [[release-notes-5.3.1]]
 ==== v5.3.1
 

elasticapm/version.py

@@ -28,5 +28,5 @@
 #  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 #  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-__version__ = (5, 3, 1)
+__version__ = (5, 3, 2)
 VERSION = ".".join(map(str, __version__))