Install lambda/reqs.txt with each pybin

Makefile

@@ -192,7 +192,7 @@ install-lambda-modules:
 	@echo -e "Creating target directory ${target_dir} for AWS Lambda layer artifacts."
 	mkdir -p ${target_dir}/python
 	@echo -e "Install upstream dependencies to include in layer"
-	@/opt/python/cp38-cp38/bin/pip3.8 install -t ${target_dir}/python -r lambda/requirements.txt
+	@set -e; for PYBIN in cp39-cp39 cp310-cp310 cp311-cp311 cp312-cp312; do /opt/python/$${PYBIN}/bin/pip install -t ${target_dir}/python -r lambda/requirements.txt; done
 	@echo -e "Install other version-specific .so files for deps"
 	@set -e; for PYBIN in cp39-cp39 cp310-cp310 cp311-cp311 cp312-cp312; do /opt/python/$${PYBIN}/bin/pip install -t ${target_dir}/$${PYBIN} -r lambda/requirements-so.txt; done
 	@set -e; for PYBIN in cp39-cp39 cp310-cp310 cp311-cp311 cp312-cp312; do cp ${target_dir}/$${PYBIN}/charset_normalizer/*.so ${target_dir}/python/charset_normalizer/ && cp ${target_dir}/$${PYBIN}/grpc/_cython/*.so ${target_dir}/python/grpc/_cython/ && cp ${target_dir}/$${PYBIN}/wrapt/*.so ${target_dir}/python/wrapt/; done