Minor fixes in two ci jobs.

Upgrade pip to find pyfaust for python3.10 in doctest_nightly_pyfaust.
Remove ~/matlab to avoid interferences with installed package in test_linux_pkg_release.

.gitlab-ci.yml

@@ -143,6 +143,7 @@ doctest_nightly_pyfaust:
     - cmake -DBUILD_WRAPPER_PYTHON=ON -DREMOTE_DATA_URL="$DURL" -DREMOTE_DATA_FILE="$DFILE" ..
     - if [[ ! -d "doctest_pyfaust_latest" ]]; then $JOB_PYTHON -m venv doctest_pyfaust-latest;fi
     - source doctest_pyfaust-latest/bin/activate
+    - python -m pip install --upgrade pip
     - python -m pip install pyfaust
     - if [ -r "/tmp/faust_data.zip" ]; then sudo rm /tmp/faust_data.zip; fi # avoid permission error if pre-exists
     - PF_DIR=`dirname $(python -c "import pyfaust as pf; print(pf.__file__)")`
@@ -754,6 +755,7 @@ test_linux_pkg_release:
     - job: pkg_linux_release_static
       artifacts: true
   script:
+    - if [[ -d "$HOME/matlab" ]];then rm -Rf $HOME/matlab;fi
     - sudo rpm -i --nodeps build/faust-$CI_COMMIT_TAG-x86_64.rpm
     - matlab -nojvm -nodisplay -r "disp(matfaust.version());disp(full(matfaust.rand(5,5))); exit;" | tee /tmp/faust && grep $CI_COMMIT_TAG /tmp/faust
     - python$NUX_PY_VER -c "import pyfaust; print(pyfaust.version()); print(pyfaust.rand(5,5).toarray());"