feat: update Dockerfile to set AGENT_TOOLSDIRECTORY for Python test execution

Author: adilhusain-s

python-versions/Dockerfile

@@ -158,7 +158,7 @@ RUN trivy fs --format cyclonedx --output /tmp/python-${PYTHON_VERSION}-${TARGETA
 WORKDIR /python-versions/tests
 RUN pwsh -Command "Install-Module -Name Pester -Force -Scope CurrentUser -SkipPublisherCheck"
 RUN cp $RUNNER_TEMP/work/build_output.txt $RUNNER_TEMP/ || touch $RUNNER_TEMP/build_output.txt
-RUN RUNNER_TOOL_CACHE=/opt pwsh python-tests.ps1 ${PYTHON_VERSION} linux ${TARGETARCH}
+RUN AGENT_TOOLSDIRECTORY=/opt RUNNER_TOOL_CACHE=/opt pwsh python-tests.ps1 ${PYTHON_VERSION} linux ${TARGETARCH}
 
 # Sanitize Artifacts
 RUN find ${PYTHON_INSTALL_DIR} -name "*.pyc" -delete && \