feat: Add Linux aarch64 support for bioconda-utils

[Yikun]

This PR try to add Linux aarch64/arm64 support for bioconda-utils:

• Support BASE_IMAGE build args in Dockerfile: the devs can specify BASE_IMAGE to switch base image.
• bioconda_utils/bioconda_utils-requirements.txt: Upgrade packages version to support Linux aarch64.
• Add --docker-base-image image to help users specify docker base image.
• Add Linux aarch64 image build to release-please.yml and build-image.yml workflow
• bioconda_utils/docker_utils.py: create conda build subdir according to arch.

After this PR, users can build the bioconda package by using same cmd with x86 by specifing --docker-base-image to build the package.

Note that the mulled-test are still not supported, there are a circle dependency between bioconda-containers and bioconda-utils, we'd better to support bioconda-utils aarch64 image first.

Test step:

$ uname -m
aarch64

# Activate a conda env
conda create -n biotest
conda activate biotest

git clone https://github.com/Yikun/bioconda-utils.git
cd bioconda-utils
git checkout aarch64

# Build docker image with embed involucro for bioconda
docker build --build-arg BASE_IMAGE=quay.io/condaforge/linux-anvil-aarch64 -t ghcr.io/yikun/bioconda-utils-build-env-cos7-aarch64 -f Dockerfile .

# Install all bioconda-utils
conda install --file bioconda_utils/bioconda_utils-requirements.txt -c conda-forge -c bioconda

# Install the bioconda-utils with this PR
pip install -e .

# Test
bioconda-utils -h

# Build a package to test
cd bioconda-recipes

bioconda-utils build --docker --packages bamstats --docker-base-image ghcr.io/yikun/bioconda-utils-build-env-cos7-aarch64 --force

After this PR merged:

conda install -c bioconda bioconda-utils

bioconda-utils build --docker --packages bamstats --docker-base-image ghcr.io/yikun/bioconda-utils-build-env-cos7-aarch64