chore: rename "InsertOrUpdate" to Upsert around the codebase (#6823)

* chore: rename "InsertOrUpdate" to Upsert around the codebase

The shorter name uses up less line width, is easier to read
and is used more often.

* make gen

coderd/database/queries/siteconfig.sql

@@ -10,21 +10,21 @@ INSERT INTO site_configs (key, value) VALUES ('derp_mesh_key', $1);
 -- name: GetDERPMeshKey :one
 SELECT value FROM site_configs WHERE key = 'derp_mesh_key';
 
--- name: InsertOrUpdateLastUpdateCheck :exec
+-- name: UpsertLastUpdateCheck :exec
 INSERT INTO site_configs (key, value) VALUES ('last_update_check', $1)
 ON CONFLICT (key) DO UPDATE SET value = $1 WHERE site_configs.key = 'last_update_check';
 
 -- name: GetLastUpdateCheck :one
 SELECT value FROM site_configs WHERE key = 'last_update_check';
 
--- name: InsertOrUpdateServiceBanner :exec
+-- name: UpsertServiceBanner :exec
 INSERT INTO site_configs (key, value) VALUES ('service_banner', $1)
 ON CONFLICT (key) DO UPDATE SET value = $1 WHERE site_configs.key = 'service_banner';
 
 -- name: GetServiceBanner :one
 SELECT value FROM site_configs WHERE key = 'service_banner';
 
--- name: InsertOrUpdateLogoURL :exec
+-- name: UpsertLogoURL :exec
 INSERT INTO site_configs (key, value) VALUES ('logo_url', $1)
 ON CONFLICT (key) DO UPDATE SET value = $1 WHERE site_configs.key = 'logo_url';