Updates python script to upgrade app version

Author: Ombrelin

ci/release-tag.py

@@ -4,6 +4,19 @@
 from github import Auth
 
 
+def update_app_version(repo: Repo, version: str):
+    file_name = "src/PlexRichPresence.UI.Avalonia/PlexRichPresence.UI.Avalonia.csproj"
+    lines = open(file_name, "r").readlines()
+    lines[6] = "        <Version>2.1.0</Version>"
+    out = open(file_name, "w")
+    out.writelines(lines)
+    out.close()
+
+    repo.index.add(file_name)
+    commit = repo.index.commit("Update app version : " + version)
+    repo.remotes.origin.push()
+
+
 def get_next_version(current_version: str) -> str:
     version_parts = current_version.split(".")
 
@@ -35,10 +48,11 @@ def get_current_version(github_token: str) -> str:
 print("Next version : " + new_version)
 
 repo: Repo = Repo(".")
+update_app_version(repo, new_version)
 new_tag: TagReference = repo.create_tag(
     new_version, message='Version "{0}"'.format(new_version)
 )
-_ = repo.remotes.origin.push(new_tag.name)
+repo.remotes.origin.push(new_tag.name)
 
 with open("version.txt", "a") as f:
     f.write(new_version)