Remove the pipeline: variables section from azure.yaml

As of azd version 1.17.0, the `pipeline:` `variables:` section in `azure.yaml` is no longer needed. The Azure Developer CLI will auto-detect the needed variables from `main.parameters.json`. Please update this repository's `azure.yaml` by: 1. Removing the entire `pipeline:` block (including nested `variables:` entries). 2. Adding (or updating) a `requiredVersions` section to enforce a modern azd version: ```yaml requiredVersions: azd: ">= 1.17.0" ``` 3. If the file uses a `metadata.template` version, bump that version to indicate the change. 4. Re-run `azd up` or your standard CI workflow to ensure everything still provisions correctly. Rationale: - Simplifies configuration (variables now inferred automatically) - Reduces duplication and risk of drift - Aligns with current azd best practices After making the change, commit and open a PR referencing this issue. ## Details **Pattern:** `pipeline:` **File:** `azure.yaml` ### Found matches: **Line 39:** ``` pipeline: ``` **Repository:** https://github.com/Azure-Samples/rag-postgres-openai-python --- *This issue was automatically created by the GitHub Repo Maintainer Agent.*