Fix dependencies

Signed-off-by: Antón Casas <antoncasas@eprosima.com>

Author: 4ntn

.github/workflows/performance.yml

@@ -32,7 +32,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y build-essential curl python3-pip valgrind
           python3 -m pip install --upgrade pip
-          python3 -m pip install msparser matplotlib
+          python3 -m pip install msparser
 
           # CMake 3.31.8
           CMAKE_VER=3.31.8
@@ -70,6 +70,14 @@ jobs:
           fetch-depth: 0
           ref: memory/performance
 
+      - name: Install Python and prerequisites
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y python3-pip
+          python3 -m pip install --upgrade pip
+          python3 -m pip install matplotlib
+
       - name: Download artifacts
         uses: actions/download-artifact@v4
         with: