chore: monthly updates for Sep'23; bump version

- fix: 0 discovered test in container
- uses containerfile for testing
- update dependencies, bump version

containerfile

@@ -0,0 +1,50 @@
+FROM docker.io/python:3-slim
+
+ENV INPUT_GH_TOKEN \
+    INPUT_WAKATIME_API_KEY \
+    # meta
+    INPUT_API_BASE_URL \
+    INPUT_REPOSITORY \
+    # content
+    INPUT_SHOW_TITLE \
+    INPUT_SECTION_NAME \
+    INPUT_BLOCKS \
+    INPUT_CODE_LANG \
+    INPUT_TIME_RANGE \
+    INPUT_LANG_COUNT \
+    INPUT_SHOW_TIME \
+    INPUT_SHOW_TOTAL \
+    INPUT_SHOW_MASKED_TIME \
+    INPUT_STOP_AT_OTHER \
+    # commit
+    INPUT_COMMIT_MESSAGE \
+    INPUT_TARGET_BRANCH \
+    INPUT_TARGET_PATH \
+    INPUT_COMMITTER_NAME \
+    INPUT_COMMITTER_EMAIL \
+    INPUT_AUTHOR_NAME \
+    INPUT_AUTHOR_EMAIL
+
+
+ENV PATH="${PATH}:/root/.local/bin" \
+    # python
+    PYTHONFAULTHANDLER=1 \
+    PYTHONUNBUFFERED=1 \
+    PYTHONHASHSEED=random \
+    PYTHONDONTWRITEBYTECODE=1 \
+    # pip
+    PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PIP_NO_CACHE_DIR=1 \
+    PIP_DEFAULT_TIMEOUT=100
+
+# copy project files
+COPY --chown=root:root pyproject.toml main.py /app/
+
+# install dependencies
+RUN python -m pip install /app/
+
+# copy tests
+COPY --chown=root:root tests /app/tests/
+
+# run tests
+CMD python -m unittest discover /app/