Update analyst categories tracked

Why is this change being made?

Industry Analyst Relations periodically updates the analyst categories we're tracking. The request is to look at the section at the top of the page "Categories of analyst reports relevant to GitLab" and make necessary changes/additions/deletions.

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what