Bumps docs version to 7.17.12 (#2718)

Author: jrodewig

shared/versions/stack/7.17.asciidoc

@@ -1,12 +1,12 @@
-:version:                7.17.11
+:version:                7.17.12
 ////
 bare_version never includes -alpha or -beta
 ////
-:bare_version:           7.17.11
-:logstash_version:       7.17.11
-:elasticsearch_version:  7.17.11
-:kibana_version:         7.17.11
-:apm_server_version:     7.17.11
+:bare_version:           7.17.12
+:logstash_version:       7.17.12
+:elasticsearch_version:  7.17.12
+:kibana_version:         7.17.12
+:apm_server_version:     7.17.12
 :branch:                 7.17
 :minor-version:          7.17
 :major-version:          7.x