Replace packaging with packvers

* import update in src/scripts/utils_dejacode

* Packvers replacing packaging in other src/scripts

* Added packvers in src/scripts/requirments.txt

Signed-off-by: swastik <swastkk@gmail.com>

Author: swastkk

etc/scripts/requirements.txt

@@ -8,4 +8,5 @@ pip
 setuptools
 twine
 wheel
-build
+build
+packvers

etc/scripts/utils_dejacode.py

@@ -15,7 +15,7 @@
 import requests
 import saneyaml
 
-from packaging import version as packaging_version
+from packvers import version as packaging_version
 
 """
 Utility to create and retrieve package and ABOUT file data from DejaCode.

etc/scripts/utils_pip_compatibility_tags.py

@@ -27,7 +27,7 @@
 
 import re
 
-from packaging.tags import (
+from packvers.tags import (
     compatible_tags,
     cpython_tags,
     generic_tags,

etc/scripts/utils_thirdparty.py

@@ -28,8 +28,8 @@
 from commoncode import fileutils
 from commoncode.hash import multi_checksums
 from commoncode.text import python_safe_name
-from packaging import tags as packaging_tags
-from packaging import version as packaging_version
+from packvers import tags as packaging_tags
+from packvers import version as packaging_version
 
 import utils_pip_compatibility_tags