Bump doc versions (#1778)

Author: lcawl

shared/versions/stack/6.8.asciidoc

@@ -1,12 +1,12 @@
-:version:                6.8.7
+:version:                6.8.8
 ////
 bare_version never includes -alpha or -beta
 ////
-:bare_version:           6.8.7
-:logstash_version:       6.8.7
-:elasticsearch_version:  6.8.7
-:kibana_version:         6.8.7
-:apm_server_version:     6.8.7
+:bare_version:           6.8.8
+:logstash_version:       6.8.8
+:elasticsearch_version:  6.8.8
+:kibana_version:         6.8.8
+:apm_server_version:     6.8.8
 :branch:                 6.8
 :major-version:          6.x
 :prev-major-version:     5.x

shared/versions/stack/7.6.asciidoc

@@ -1,12 +1,12 @@
-:version:                7.6.1
+:version:                7.6.2
 ////
 bare_version never includes -alpha or -beta
 ////
-:bare_version:           7.6.1
-:logstash_version:       7.6.1
-:elasticsearch_version:  7.6.1
-:kibana_version:         7.6.1
-:apm_server_version:     7.6.1
+:bare_version:           7.6.2
+:logstash_version:       7.6.2
+:elasticsearch_version:  7.6.2
+:kibana_version:         7.6.2
+:apm_server_version:     7.6.2
 :branch:                 7.6
 :major-version:          7.x
 :prev-major-version:     6.x