Patch tests after deprecation (#920)

**Context:**
Patching stable lightning tests for the latest pennylane.


[stable/latest](https://github.com/PennyLaneAI/pennylane-lightning/actions/runs/10965680477)

**Description of the Change:**

**Benefits:**

**Possible Drawbacks:**

**Related GitHub Issues:**

---------

Co-authored-by: Ali Asadi <10773383+maliasadi@users.noreply.github.com>

.github/workflows/tests_lqcpu_python.yml

@@ -195,6 +195,13 @@ jobs:
           git log -1 --format='%H'
           git status
 
+      - name: Patching tests following deprecation FIXME(remove after v0.39)
+        if: inputs.lightning-version == 'stable' && inputs.pennylane-version == 'latest'
+        run: |
+          pushd tests
+          grep -rl "default.qubit.legacy" . | xargs sed -i "s|default.qubit.legacy|default.qubit|g";
+          popd
+
       - name: Run PennyLane-Lightning unit tests
         run: |
           DEVICENAME=`echo ${{ matrix.pl_backend }} | sed "s/_/./g"`

pennylane_lightning/core/_version.py

@@ -16,4 +16,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "0.39.0-dev31"
+__version__ = "0.39.0-dev32"