ARROW-14750: [Release] Update post-03-website.sh for 6.0.1
ARROW-14750: [Release] Update post-03-website.sh for 6.0.1

  * Add more artifacts
    * AlmaLinux
    * Amazon Linux
    * C#
  * Add support for patch release
  * Ensure updating base branch of arrow-site

Closes #11734 from kou/release-post-website

Authored-by: Sutou Kouhei <73218711cdd5d5c30ac66da3cc4d9d9204caf34b@clear-code.com>
Signed-off-by: Sutou Kouhei <73218711cdd5d5c30ac66da3cc4d9d9204caf34b@clear-code.com>

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