prepared release of version 3.5.15 (#12693)

* prepared release of version 3.5.15

* bump pyyaml

Author: Urkem

CHANGELOG.mdx

@@ -16,6 +16,13 @@ https://github.com/RasaHQ/rasa/tree/main/changelog/ . -->
 
 <!-- TOWNCRIER -->
 
+## [3.5.15] - 2023-07-21
+                        
+Rasa 3.5.15 (2023-07-21)                          
+
+No significant changes.
+
+
 ## [3.5.14] - 2023-07-12
 
 Rasa 3.5.14 (2023-07-12)                         

poetry.lock

@@ -9,7 +9,7 @@ exclude = "((.eggs | .git | .pytest_cache | build | dist))"
 
 [tool.poetry]
 name = "rasa"
-version = "3.5.14"
+version = "3.5.15"
 description = "Open source machine learning framework to automate text- and voice-based conversations: NLU, dialogue management, connect to Slack, Facebook, and more - Create chatbots and voice assistants"
 authors = [ "Rasa Technologies GmbH <hi@rasa.com>",]
 maintainers = [ "Tom Bocklisch <tom@rasa.com>",]
@@ -102,6 +102,7 @@ fbmessenger = "~6.0.0"
 pykwalify = ">=1.7,<1.9"
 coloredlogs = ">=10,<16"
 "ruamel.yaml" = ">=0.16.5,<0.18.0"
+pyyaml = ">=6.0"
 twilio = ">=6.26,<7.15"
 webexteamssdk = ">=1.1.1,<1.7.0"
 mattermostwrapper = "~2.2"

pyproject.toml

@@ -1,3 +1,3 @@
 # this file will automatically be changed,
 # do not add anything but the version number here!
-__version__ = "3.5.14"
+__version__ = "3.5.15"