Update current_version

Author: wannaphong

setup.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 5.2.0-beta
+current_version = 5.2.0-beta1
 commit = True
 tag = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<release>[a-z]+)(?P<build>\d+))?

setup.py

@@ -162,7 +162,7 @@
 
 setup(
     name="pythainlp",
-    version="5.2.0-beta",
+    version="5.2.0-beta1",
     description="Thai Natural Language Processing library",
     long_description=LONG_DESC,
     long_description_content_type="text/markdown",