python-stdnum v2.2, fix CI, add kj55-dev as maintainer

- bump version from 1.19 to 2.2
- update source URL from pypi.io to pypi.org (pypi.io deprecated)
- handle PyPI sdist filename normalization (python_stdnum-2.2.tar.gz)
- bump python floor to >=3.8 (upstream requires_python)
- add setuptools to host requirements explicitly
- add `pip check` test + pip as test requires
- add kj55-dev as co-maintainer (closes conda-forge#12, supersedes conda-forge#13)

Author: kj55-dev

.github/CODEOWNERS

@@ -1,13 +1,13 @@
 {% set name = "python-stdnum" %}
-{% set version = "1.19" %}
+{% set version = "2.2" %}
 
 package:
   name: {{ name|lower }}
   version: {{ version }}
 
 source:
-  url: https://pypi.io/packages/source/{{ name[0] }}/{{ name }}/{{ name }}-{{ version }}.tar.gz
-  sha256: 133ec82f56390ea74c190569e98f2fb14b869808b1d54785708f22d0fead8b3f
+  url: https://pypi.org/packages/source/{{ name[0] }}/{{ name }}/{{ name.replace('-', '_') }}-{{ version }}.tar.gz
+  sha256: e95fcfa858a703d4a40130cb3eaac133c60d8808a7f3c98efeedac968c2479b9
 
 build:
   noarch: python
@@ -16,15 +16,20 @@ build:
 
 requirements:
   host:
-    - python >=3.6
+    - python >=3.8
     - pip
+    - setuptools
   run:
-    - python >=3.6
+    - python >=3.8
 
 
 test:
   imports:
     - stdnum
+  commands:
+    - pip check
+  requires:
+    - pip
 
 about:
   home: https://pypi.org/project/python-stdnum/
@@ -43,3 +48,4 @@ about:
 extra:
   recipe-maintainers:
     - kcemenike
+    - kj55-dev