Disable test pipeline for python 3.8

The current license metadata syntax is not supported in 3.8 and leads to
errors in the pipeline.

Author: bodograumann

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
 
     steps:
     - uses: actions/checkout@v5

README.md

@@ -17,7 +17,7 @@ To install the module use
 
 This module package requires at least Python 3.6, a corresponding version of
 libffi and the native iconv library.
-It is only tested with Python 3.8 and higher.
+It is only tested with Python 3.9 and higher.
 
 Module iconv
 ------------