Add steps to manage deps via renovate [skip ci] (#1228)

* Add steps to manage deps via renovate [skip ci]

Signed-off-by: wslulciuc <[email protected]>

* continued: Add steps to manage deps via renovate [skip ci]

Signed-off-by: wslulciuc <[email protected]>

CONTRIBUTING.md

@@ -110,7 +110,42 @@ To ensure your pull request is accepted, follow these guidelines:
 
 * Choose _short_ and _descriptive_ branch names
 * Use dashes (`-`) to separate _words_ in branch names
-* Use _lowercase_ in branch names
+* Use _lowercase_ in branch names
+
+# Dependencies
+
+We use [renovate](https://github.com/renovatebot/renovate) to manage dependencies for all of our project modules. Renovate automatically opens pull requests against our [`update-deps`](https://github.com/MarquezProject/marquez/tree/update-deps) branch in order to ensure builds pass before merging into `main`. To merge dependencies updates:
+
+> **Note:** Make sure you've pulled the latest upstream changes for `update-deps` and `main`.
+
+1. Switch to `update-deps`:
+
+ ```bash
+ $ git checkout update-deps
+ ```
+
+2. Merge `main` into `update-deps` (make sure to address any merge conflicts, if any), then push:
+
+ ```bash
+ $ git merge main
+ $ git push origin update-deps
+ ```
+
+3. Branch off `update-deps`:
+
+
+ ```bash
+ $ git checkout -b deps/renovate
+ ```
+
+4. Push your branch:
+
+
+ ```bash
+ $ git push origin deps/renovate
+ ```
+
+5. Then, open a pull request against `main`
 
 # Sign Your Work