Add an open source partner to list of orgs

Why is this change being made?

This MR suggests that we add an open source partner to the list of orgs we mention in our press kit boilerplate section. Since we mention open source in that same paragraph, it would be great to have a mention of a well known org, like Drupal, which is used by many pub-sec, education, and enterprise customers.

A stat from their page: "One in 30 sites on the web is powered by Drupal, and that means most users of the web have experienced Drupal—even if they don't know it."

Author Checklist

• Provided a concise title for the MR
• Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
• Assign this change to the correct DRI
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