Fix discord server invitation

Relates to pylint-dev/pylint#4393

Author: Pierre-Sassoulas

ChangeLog

@@ -8,8 +8,10 @@ Release Date: TBA
 
 What's New in astroid 2.5.5?
 ============================
-Release Date: TBA
+Release Date: 2021-04-24
 
+* Fixes the discord link in the project urls of the package.
+  Closes PyCQA/pylint#4393
 
 What's New in astroid 2.5.4?
 ============================

astroid/__pkginfo__.py

@@ -31,7 +31,7 @@
 __version__ = "2.5.5"
 # For an official release, use 'alpha_version = False' and 'dev_version = None'
 alpha_version: bool = False  # Release will be an alpha version if True (ex: '1.2.3a6')
-dev_version: Optional[int] = 1
+dev_version: Optional[int] = None
 
 if dev_version is not None:
     if alpha_version:

setup.cfg

@@ -29,7 +29,7 @@ classifiers =
 keywords = static code analysis,python,abstract syntax tree
 project_urls =
     Bug tracker = https://github.com/PyCQA/astroid/issues
-    Discord server = https://discord.gg/kFebW799
+    Discord server = https://discord.gg/Egy6P8AMB5
 
 [options]
 packages = find: