[Ubuntu 22.04] Bump STIG profile metadata from V2R3 to V2R7

All V2R7 control PRs (#14427, #14418, #14415, #14416, #14433) were
merged without updating the version metadata fields. This causes STIG
Viewer imports and auditor reports to display V2R3 while the actual
content reflects V2R7 rules.

Updated files:
- controls/stig_ubuntu2204.yml: version V2R3 → V2R7
- products/ubuntu2204/profiles/stig.profile: version, title, and
  description strings V2R3 → V2R7

Author: hdean3

controls/stig_ubuntu2204.yml

@@ -2,7 +2,7 @@
 policy: Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide (STIG)
 title: Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide (STIG)
 id: stig_ubuntu2204
-version: V2R3
+version: V2R7
 source: https://www.cyber.mil/stigs/downloads/
 
 levels:

products/ubuntu2204/profiles/stig.profile

@@ -2,7 +2,7 @@
 documentation_complete: true
 
 metadata:
-    version: V2R3
+    version: V2R7
     SMEs:
         - mpurg
         - dodys
@@ -11,11 +11,11 @@ metadata:
 
 reference: https://www.cyber.mil/stigs/downloads
 
-title: 'Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide (STIG) V2R3'
+title: 'Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide (STIG) V2R7'
 
 description: |-
     This profile contains configuration checks that align to the
-    DISA STIG for Canonical Ubuntu 22.04 LTS V2R3.
+    DISA STIG for Canonical Ubuntu 22.04 LTS V2R7.
 
 selections:
     - stig_ubuntu2204:all