chore(deps): update python docker tag to v3.13 (#83)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

docker/Dockerfile

@@ -10,7 +10,7 @@ RUN go build -ldflags='-s -w -extldflags "-static"' -o /bin/mym ./cmd/mym
 FROM node:18-alpine AS node-builder
 RUN npm i --silent -g vercel
 
-FROM python:3.12-alpine
+FROM python:3.13-alpine
 RUN apk update && apk add --no-cache gcc musl-dev libffi-dev curl sqlite jq
 RUN pip install datasette
 RUN datasette install datasette-publish-vercel