Update action value for correctness

[crobert-1]

Requirements

• Content follows Splunk guidelines for style and formatting.
• You are contributing original content.

Describe the change

upsert properly inserts the access token if the key doesn't already exist, or overwrites an existing value. insert will not overwrite the existing value, meaning an incorrect access token may be used. (Documentation on insert vs. upsert)

[dloucasfx]

LGTM!

[jcatera-splunk]

LGTM, thanks!