[nrf noup] Workaround for issue with Matter Docker image.

In the docker image there is a change in the zephyr-env.sh script
that breaks the checkout.
We need to stash the changes and reapply them after the NCS update.
It should be fixed during the next NCS bump in the Matter upstream
repository.

Signed-off-by: Arkadiusz Balys <[email protected]>

Author: ArekBalysNordic

.github/workflows/examples-nrfconnect.yaml

@@ -43,6 +43,12 @@ jobs:
               uses: ./.github/actions/checkout-submodules-and-bootstrap
               with:
                 platform: nrfconnect
+            # Workaround, in docker image there is a change in the zephyr-env.sh script that breaks the checkout process.
+            # We need to restore the zephyr-env.sh script to the original state.
+            # It should be fixed during the next NCS bump in the Matter upstream repository.
+            - name: Pre-update NCS
+              run: |
+                  git -C /opt/NordicSemiconductor/nrfconnect/zephyr stash
             - name: Update NCS recommended version (workflow_dispatch)
               if: github.event_name == 'workflow_dispatch'
               run: |