Pin required Python version constraints

Author: bkis

.github/workflows/docs.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-python@v6
         with:
-          python-version: 3.x
+          python-version: "3.12"
       - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
       - uses: actions/cache@v4
         with:

Tekst-API/pyproject.toml

@@ -11,7 +11,7 @@ maintainers = [
 ]
 license = "AGPL-3.0-or-later"
 license-files = ["LICENSE"]
-requires-python = ">=3.12,<4.0"
+requires-python = ">=3.12,<3.14"
 dependencies = [
     "pyhumps<4.0.0,>=3.8.0",
     "click<9.0.0,>=8.1.6",