Update release plan for stable (microsoft#23896)

Author: karthiknadig

.github/release_plan.md

@@ -40,6 +40,9 @@ NOTE: the number of this release is in the issue title and can be substituted in
 
 -   [ ] checkout to `main` on your local machine and run `git fetch` to ensure your local is up to date with the remote repo.
 -   [ ] Create a new branch called  **`bump-release-[YYYY.minor]`**.
+-   [ ] Update `pet`:
+    -  [ ] Go to the [pet](https://github.com/microsoft/python-environment-tools) repo and check `main` and latest `release/*` branch. If there are new changes in `main` then create a branch called `release/YYYY.minor` (matching python extension release `major.minor`).
+    -  [ ] Update `build\azure-pipeline.stable.yml` to point to the latest `release/YYYY.minor` for `python-environment-tools`.
 -   [ ] Change the version in `package.json` to the next **even** number and switch the `-dev` to `-rc`. (🤖)
 -   [ ] Run `npm install` to make sure `package-lock.json` is up-to-date _(you should now see changes to the `package.json` and `package-lock.json` at this point which update the version number **only**)_. (🤖)
 -   [ ] Update `ThirdPartyNotices-Repository.txt` as appropriate. You can check by looking at the [commit history](https://github.com/microsoft/vscode-python/commits/main) and scrolling through to see if there's anything listed there which might have pulled in some code directly into the repository from somewhere else. If you are still unsure you can check with the team.
@@ -111,6 +114,7 @@ NOTE: this PR should make all CI relating to `main` be passing again (such as th
 -   [ ] Create a branch against  **`release/YYYY.minor`** called **`release-[YYYY.minor.point]`**.
 -   [ ] Bump the point version number in the `package.json` to the next `YYYY.minor.point`
 -   [ ] Run `npm install` to make sure `package-lock.json` is up-to-date _(you should now see changes to the `package.json` and `package-lock.json` only relating to the new version number)_ . (🤖)
+-   [ ] If Point Release is due to an issue in `pet`. Update `build\azure-pipeline.stable.yml` to point to the branch `release/YYYY.minor` for `python-environment-tools` with the fix or decided by the team.
 -   [ ] Create a PR from this branch against `release/YYYY.minor`
 -   [ ]  **Rebase** and merge this PR into the release branch
 -   [ ] Create a draft GitHub release for the release notes (🤖) ❄️

build/azure-pipeline.stable.yml

@@ -17,7 +17,7 @@ resources:
     - repository: python-environment-tools
       type: github
       name: microsoft/python-environment-tools
-      ref: release/latest
+      ref: release/2024.12
       endpoint: Monaco
 
 parameters: