#22 Update checkout action to v3, test with python protobuf 3.1.6

.github/workflows/test.yml

@@ -7,13 +7,13 @@ jobs:
     runs-on: ubuntu-20.04
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     # Use the python version installed by Ubuntu 20.04 (version 3.8.5),
     # so we can use precompiled gdal and protobuf
     #- name: Set up Python 3.8
-    #  uses: actions/setup-python@v2
+    #  uses: actions/setup-python@v3
     #  with:
-    #    python-version: 3.8
+    #    python-version: "3.8"
     - name: Install xmllint and GDAL
       run: sudo apt-get install -y libxml2-utils gdal-bin libgdal-dev python3-gdal
     - name: "Install python dependencies: cram and lxml"
@@ -27,9 +27,9 @@ jobs:
         cram test/pbf_output_no_protobuf.t
     - name: Install protobuf and osmctools
       run: sudo apt-get install -y libprotobuf-dev protobuf-compiler osmctools
-    - name: "Install python dependencies: protobuf"
-      run: |
-        pip install --upgrade protobuf
+    #- name: "Install python dependencies: protobuf"
+    #  run: |
+    #    pip install --upgrade protobuf
     - name: Testing the code with cram, protobuf installed
       run: |
         cram test/pbf_output.t