Install PL dev intead of PL stable on CI (#516)

* install PL dev intead of PL stable on CI

* trigger ci

* also a couple of other places

.github/workflows/tests.yml

@@ -29,6 +29,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install git+https://github.com/PennyLaneAI/pennylane.git
           pip install -r requirements-ci-legacy.txt
           pip install wheel pytest pytest-cov pytest-mock flaky --upgrade
           pip freeze
@@ -70,13 +71,16 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install git+https://github.com/PennyLaneAI/pennylane.git
           pip install -r requirements-ci-legacy.txt
           pip install wheel pytest pytest-cov pytest-mock pytest-benchmark flaky --upgrade
+          pip freeze
 
       - name: Install Plugin
         run: |
           python setup.py bdist_wheel
           pip install dist/PennyLane*.whl
+          pip freeze
 
       - name: Run tests
         run: |

.github/workflows/tests_qiskit_1.yml

@@ -29,6 +29,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install git+https://github.com/PennyLaneAI/pennylane.git
           pip install -r requirements-ci.txt
           pip install wheel pytest pytest-cov pytest-mock flaky --upgrade
           pip freeze
@@ -67,6 +68,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install git+https://github.com/PennyLaneAI/pennylane.git
           pip install -r requirements-ci.txt
           pip install wheel pytest pytest-cov pytest-mock pytest-benchmark flaky --upgrade