AG-49550 add extension to requirements in specs

Squashed commit of the following:

commit 91f947e
Author: slvvko <v.leleka@adguard.com>
Date:   Wed Dec 17 12:07:43 2025 -0500

    update requirements in specs

Author: slvvko

bamboo-specs/build.yaml

@@ -62,6 +62,7 @@ Build:
       required: true
   requirements:
     - adg-docker: 'true'
+    - extension: 'true'
 
 triggers: []
 

bamboo-specs/deploy.yaml

@@ -71,6 +71,7 @@ npmjs: &npmjs
           commitMessage: 'deploy: update docs for v${bamboo.inject.version}'
   requirements:
     - adg-docker: 'true'
+    - extension: 'true'
   notifications:
     - events:
         - deployment-started-and-finished

bamboo-specs/increment.yaml

@@ -55,6 +55,7 @@ Increment:
           - "./bamboo-specs/scripts/cleanup.sh"
   requirements:
     - adg-docker: 'true'
+    - extension: 'true'
 
 branches:
   create: manually