Update GitHub actions

Author: TimWolla

.github/workflows/deploy.yml

@@ -21,7 +21,7 @@ jobs:
     - uses: actions/checkout@v3
       with:
         fetch-depth: 0
-    - uses: actions/setup-python@v3
+    - uses: actions/setup-python@v4
       with:
         python-version: '3.x'
     - run: pip3 install -r requirements.txt

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: actions/setup-python@v3
+    - uses: actions/setup-python@v4
       with:
         python-version: '3.x'
     - run: pip3 install -r requirements.txt