ci: Run integration tests on Python 3.14t (#4995)

Modifies `populate_tox.py` to add free-threading Python to the test
suite for integrations where we can expect the package to support
free-threading. Packages are considered compatible with free-threading
if the package itself, and all its dependencies, support free-threading.

Pure Python packages are considered compatible if their dependencies
support free-threading. The support for free-threading of packages with
extension modules is determined based on the ABI tag in the wheel name.

A dry-run of `pip install` determines the ABI tags of dependencies.
Relevant output from the command is cached analogously to responses of
PyPI REST calls.

Closes #4971

Author: alexander-alderman-webb

.github/workflows/test-integrations-ai.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8","3.9","3.10","3.11","3.12","3.13","3.14"]
+        python-version: ["3.8","3.9","3.10","3.11","3.12","3.13","3.14","3.14t"]
         # python3.6 reached EOL and is no longer being supported on
         # new versions of hosted runners on Github Actions
         # ubuntu-20.04 is the last version that supported python3.6

.github/workflows/test-integrations-cloud.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.6","3.7","3.8","3.9","3.10","3.11","3.12","3.13","3.14"]
+        python-version: ["3.6","3.7","3.8","3.9","3.10","3.11","3.12","3.13","3.14","3.14t"]
         # python3.6 reached EOL and is no longer being supported on
         # new versions of hosted runners on Github Actions
         # ubuntu-20.04 is the last version that supported python3.6

.github/workflows/test-integrations-flags.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7","3.8","3.9","3.12","3.13","3.14"]
+        python-version: ["3.7","3.8","3.9","3.12","3.13","3.14","3.14t"]
         # python3.6 reached EOL and is no longer being supported on
         # new versions of hosted runners on Github Actions
         # ubuntu-20.04 is the last version that supported python3.6

.github/workflows/test-integrations-graphql.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.6","3.8","3.9","3.10","3.11","3.12","3.13","3.14"]
+        python-version: ["3.6","3.8","3.9","3.10","3.11","3.12","3.13","3.14","3.14t"]
         # python3.6 reached EOL and is no longer being supported on
         # new versions of hosted runners on Github Actions
         # ubuntu-20.04 is the last version that supported python3.6

.github/workflows/test-integrations-network.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.6","3.7","3.8","3.9","3.10","3.11","3.12","3.13","3.14"]
+        python-version: ["3.6","3.7","3.8","3.9","3.10","3.11","3.12","3.13","3.14","3.14t"]
         # python3.6 reached EOL and is no longer being supported on
         # new versions of hosted runners on Github Actions
         # ubuntu-20.04 is the last version that supported python3.6

.github/workflows/test-integrations-web-1.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.6","3.7","3.8","3.9","3.10","3.11","3.12","3.13","3.14"]
+        python-version: ["3.6","3.7","3.8","3.9","3.10","3.11","3.12","3.13","3.14","3.14t"]
         # python3.6 reached EOL and is no longer being supported on
         # new versions of hosted runners on Github Actions
         # ubuntu-20.04 is the last version that supported python3.6

.github/workflows/update-tox.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v6
         with:
-          python-version: 3.13
+          python-version: 3.14t
 
       - name: Checkout repo
         uses: actions/checkout@v5.0.0