Update pyproject.toml

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "paddleocr"
 # After each version release, the version number needs to be incremented
-version = "2.8.0"
+dynamic = ["version"]
 description = "Awesome OCR toolkits based on PaddlePaddle(8.6M ultra-lightweight pre-trained model, support training and deployment among server, mobile, embedded and IoT devices)"
 authors = [
     {name = "PaddlePaddle", email = "[email protected]"},
@@ -66,3 +66,5 @@ packages = ["paddleocr"]
 package-dir = { "paddleocr" = "" }
 include-package-data = true
 
+[tool.setuptools.dynamic]
+version = {file = "VERSION_NUMBER"}