Fix install

Author: DifferentialOrange

.github/workflows/testing.yml

@@ -75,14 +75,12 @@ jobs:
         with:
           python-version: ${{ matrix.python }}
 
-      - name: Install connection requirements (msgpack package)
-        if: startsWith(matrix.msgpack-deps, 'msgpack-python==') == false
+      - name: Install specific version of msgpack package
+        if: startsWith(matrix.msgpack-deps, 'msgpack==') == true
         run: |
           pip install ${{ matrix.msgpack-deps }}
-          pip install -r requirements.txt
 
-
-      - name: Install connection requirements (msgpack-python package)
+      - name: Install specific version of msgpack-python package
         # msgpack package is a replacement for deprecated msgpack-python.
         # To test compatibility with msgpack-python we must ignore
         # requirements.txt install of msgpack package by overwriting it
@@ -91,7 +89,9 @@ jobs:
         run: |
           pip install ${{ matrix.msgpack-deps }}
           sed -i -e "s/^msgpack.*$/${{ matrix.msgpack-deps }}/" requirements.txt
-          pip install -r requirements.txt
+
+      - name: Install package requirements
+        run: pip install -r requirements.txt
 
       - name: Install test requirements
         run: pip install -r requirements-test.txt