update restore key for unit tests

Author: Shivani-gslab

.github/workflows/pull-request-management.yml

@@ -426,7 +426,8 @@ jobs:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-requirements-ci-${{ hashFiles('.github/requirements-ci.txt') }}-3.10
           restore-keys: |
-            ${{ runner.os }}-pip-requirements-ci-3.10-
+            ${{ runner.os }}-pip-requirements-ci-${{ hashFiles('.github/requirements-ci.txt') }}-
+            ${{ runner.os }}-pip-requirements-dev-${{ hashFiles('ansible_collections/arista/avd/requirements-dev.txt') }}-
       - name: 'Install Python requirements'
         run: |
           pip install mock pytest pytest-mock pytest-xdist pyyaml "ansible-core<2.19.0" --upgrade