Try Brille branch for Conan update

.github/workflows/run_tests.yml

@@ -17,7 +17,7 @@ jobs:
        (github.event_name == 'pull_request' && !contains(github.event.pull_request.labels.*.name, 'no_ci'))
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-12]
+        os: [ubuntu-latest, windows-latest, macos-latest]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:

tox.ini

@@ -66,6 +66,7 @@ commands = {[testenv]test_command} --cov -m "phonopy_reader and not multiple_ext
 install_command = {[testenv:py310]install_command}
 deps = {[testenv:py310]deps}
 commands_pre =
+    python -m pip install git+https://github.com/brille/brille.git@100-conan
     python -m pip install \
         --upgrade \
         --upgrade-strategy eager \
@@ -77,6 +78,7 @@ commands = {[testenv]test_command} --cov -m "brille and not multiple_extras"
 install_command = {[testenv:py310]install_command}
 deps = {[testenv:py310]deps}
 commands_pre =
+    python -m pip install git+https://github.com/brille/brille.git@100-conan
     python -m pip install \
         --upgrade \
         --upgrade-strategy eager \
@@ -99,5 +101,6 @@ commands_pre =
         -r{toxinidir}/tests_and_analysis/tox_requirements.txt
     # Force rebuild of euphonic extension to avoid Numpy clash
     rm -rf {toxinidir}/build
+    python -m pip install git+https://github.com/brille/brille.git@100-conan
     python -m pip install '{toxinidir}[matplotlib,phonopy_reader,brille]'
 commands = {[testenv]test_command}