chore(deps): update docker.io/library/python docker tag to v3.15

.gitea/workflows/tag.yaml

@@ -96,22 +96,11 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           pull: true
 
-  release:
-    # Publishes the Gitea release for this tag (body = commits since the previous
-    # tag). Renovate copies that body into the bump PR in
-    # perso_private/tf-depl-kubernetes under "Release Notes"; without a release
-    # that section stays empty (bare "Compare Source" link).
-    needs: [build-push]
-    uses: perso/gitea-pipelines/.gitea/workflows/gitea-release.yaml@main
-    with:
-      image: jcabillot/mcp-maildir
-    secrets: inherit
-
   trigger-renovate:
     # The deployment repo perso_private/tf-depl-kubernetes pins this image; its
     # Renovate instance only scans hourly, so this dispatch opens the image bump
     # PR within minutes of the release instead of up to an hour later.
-    needs: [build-push, release]
+    needs: [build-push]
     runs-on: ubuntu-latest
     steps:
       - name: Trigger Renovate on perso_private/tf-depl-kubernetes
@@ -122,6 +111,6 @@ jobs:
           curl -sS -f -X POST \
             -u "renovate:${{ secrets.RENOVATE_TOKEN }}" \
             -H "Content-Type: application/json" \
-            -d '{"ref":"main"}' \
+            -d '{{"ref":"main"}}' \
             "https://scm.cabillot.eu/api/v1/repos/perso_private/tf-depl-kubernetes/actions/workflows/renovate.yaml/dispatches"
           echo "Renovate dispatched on perso_private/tf-depl-kubernetes"

pkg/Dockerfile

@@ -1,5 +1,5 @@
 # 3.13, because with 3.14 it requires gcc (wheels not available)
-FROM docker.io/library/python:3.14-slim
+FROM docker.io/library/python:3.15-slim
 
 # Set environment variables
 ENV PYTHONDONTWRITEBYTECODE=1