fix: upgrade twine to support PEP 639 license metadata

Twine 6.0+ supports the license-file and license-expression fields.
Also removed redundant license field since classifier is sufficient.

Author: mrecachinas

.github/workflows/pythonpackage.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Install cibuildwheel
         run: |
           python3 -m pip install --upgrade pip
-          python3 -m pip install cibuildwheel twine
+          python3 -m pip install cibuildwheel 'twine>=6.0.0'
 
       - name: 🛠 Build and Test Hexhamming Python C extension
         run: cibuildwheel
@@ -85,7 +85,7 @@ jobs:
     - name: Install cibuildwheel
       run: |
         python3 -m pip install --upgrade pip
-        python3 -m pip install cibuildwheel twine
+        python3 -m pip install cibuildwheel 'twine>=6.0.0'
 
     - name: 🛠 Build Hexhamming Python C extension
       run: cibuildwheel
@@ -132,7 +132,7 @@ jobs:
       - name: Install cibuildwheel
         run: |
           python3 -m pip install --upgrade pip
-          python3 -m pip install cibuildwheel twine
+          python3 -m pip install cibuildwheel 'twine>=6.0.0'
 
       - name: 🛠 Build Hexhamming Python C extension
         run: cibuildwheel
@@ -164,7 +164,7 @@ jobs:
       - name: Install cibuildwheel
         run: |
           python3 -m pip install --upgrade pip
-          python3 -m pip install cibuildwheel twine
+          python3 -m pip install cibuildwheel 'twine>=6.0.0'
 
       - name: 🛠 Build Hexhamming Python C extension
         run: cibuildwheel

pyproject.toml

@@ -7,7 +7,6 @@ name = "hexhamming"
 version = "2.2.3"
 description = "Fast Hamming distance calculation for hexadecimal strings"
 readme = "README.rst"
-license = {text = "MIT"}
 authors = [
     { name = "Michael Recachinas", email = "m.recachinas@gmail.com" }
 ]