Update the token-macro Jenkins plugin to 2.10 (#16955)

Otherwise, I see:
  java.io.IOException: Failed to load: Jenkins Git plugin (4.2.2)
   - Update required: Token Macro Plugin (2.8) to be updated to 2.10 or higher

Fixup against 86d03365.

manifests/jenkins/master.pp

@@ -476,8 +476,8 @@ class tails::jenkins::master (
   }
 
   jenkins::plugin { 'token-macro':
-    version       => '2.8',
-    digest_string => '5b068a58d8bbc91a74cffd137eaa19602d7d8d5ce9018cc00ad67e33b7c3283c',
+    version       => '2.10',
+    digest_string => '81788d8a6ea266875a42749a07373a3de7cb4f94c76c0413619be83609e9ecf6',
     digest_type   => 'sha256',
     require       => Jenkins::Plugin['structs'],
   }