python-chardet: bump to 7.0.1

Full release notes:
https://github.com/chardet/chardet/releases/tag/7.0.1

Add 'python3-codecs' as dependency. No idea when (or if) this was
ever needed, but it became obvious after test.sh was added.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

lang/python/python-chardet/test.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+[ "$1" = python3-chardet ] || exit 0
+
+python3 - << 'EOF'
+import chardet
+
+result = chardet.detect(b'Hello, World!')
+assert result['encoding'] is not None
+
+result = chardet.detect('Привет мир'.encode('utf-8'))
+assert result['encoding'] is not None
+EOF