increment actions versions for setup-python and checkout (fixes #105)

Author: MalteKurz

.github/workflows/deploy_docu_dev.yml

@@ -18,10 +18,10 @@ jobs:
 
     steps:
     - name: Check out the repo containing the docu source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Check out the repo containing the python pkg DoubleML (dev)
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         repository: DoubleML/doubleml-for-py
         path: doubleml-for-py
@@ -35,7 +35,7 @@ jobs:
       run: sudo apt-get install graphviz
 
     - name: Install python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: '3.8'
     - name: Install dependencies and the python package

.github/workflows/deploy_docu_stable.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: Check out the repo containing the docu source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install SSH Client for deploying the docu to github pages
       uses: webfactory/[email protected]
@@ -24,7 +24,7 @@ jobs:
       run: sudo apt-get install graphviz
 
     - name: Install python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: '3.8'
     - name: Install dependencies and the python package

.github/workflows/test_build_docu_dev.yml

@@ -32,18 +32,18 @@ jobs:
 
     steps:
     - name: Check out the repo containing the docu source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Check out the repo containing the python pkg DoubleML (dev)
       if: ${{ github.event_name != 'workflow_dispatch' }}
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         repository: DoubleML/doubleml-for-py
         path: doubleml-for-py
 
     - name: Check out the repo containing the python pkg DoubleML (dev)
       if: ${{ github.event_name == 'workflow_dispatch' }}
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         repository: DoubleML/doubleml-for-py
         path: doubleml-for-py
@@ -53,7 +53,7 @@ jobs:
       run: sudo apt-get install graphviz
 
     - name: Install python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: '3.8'
     - name: Install dependencies and the python package

.github/workflows/test_build_docu_released.yml

@@ -21,13 +21,13 @@ jobs:
 
     steps:
     - name: Check out the repo containing the docu source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install graphviz
       run: sudo apt-get install graphviz
 
     - name: Install python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: '3.8'
     - name: Install dependencies and the python package