fleetdm.com pricing page: Add "Audit log" (#9723)

- Add "Audit log" item. Covers ability to ship activity to external
destinations. Fleet Premium only

More context here in Slack (internal):
https://fleetdm.slack.com/archives/C02A8BRABB5/p1675783658467209

handbook/product/pricing-features-table.yml

@@ -107,6 +107,9 @@
     - name: Role-based access control
       tier: Free
       comingSoon: false
+    - name: Audit log
+      tier: Premium
+      comingSoon: false
     - name: Just-in-time provisioning
       tier: Premium
       comingSoon: false
@@ -178,4 +181,4 @@
       comingSoon: false
     - name: Managed Cloud
       tier: Ultimate
-      comingSoon: false
+      comingSoon: false

website/views/pages/pricing.ejs

@@ -28,6 +28,7 @@
               <%// Premium security features%>
               <div purpose="features-list" v-if="displaySecurityPricingMode">
                 <p>Single-Sign On (SSO)</p>
+                <p>Audit log</p>
                 <p>24 hour support for PO</p>
                 <p>Unlimited device groups (teams)</p>
                 <p>Employee/device mapping</p>