try to install old cmake for checks module

Author: patapenka-alexey

.github/workflows/testing.yml

@@ -62,7 +62,7 @@ jobs:
           curl -L https://tarantool.io/release/2/installer.sh | sudo bash
           sudo apt install -y tt
           tt version
-          tt init 
+          tt init
 
       - name: Install tarantool ${{ matrix.tarantool }}
         if: matrix.tarantool != 'master'
@@ -118,6 +118,10 @@ jobs:
       - name: Install test requirements
         run: pip3 install -r requirements-test.txt
 
+      # Temporary solution, waiting for the `checks` module update.
+      - name: Install old CMake for checks dependency
+        run: pip3 install cmake==3.4
+
       - name: Install the crud module for testing purposes
         run: |
           tt rocks install crud 1.5.2