Update ELK images

elasticsearch:
- https://github.com/docker-library/elasticsearch/commit/512e14e: Update to 7.11.2

logstash:
- https://github.com/docker-library/logstash/commit/93759d0: Update to 7.11.2

kibana:
- https://github.com/docker-library/kibana/commit/26d3606: Update to 7.11.2

library/elasticsearch

@@ -4,9 +4,9 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/elasticsearch.git
 
-Tags: 7.11.1
+Tags: 7.11.2
 Architectures: amd64, arm64v8
-GitCommit: 4ac154b859d306286cf240607fe2bdefa0a1caab
+GitCommit: 512e14ed8f2f9456de9cc750aa257355ecbbc453
 Directory: 7
 
 Tags: 6.8.14

library/kibana

@@ -4,8 +4,8 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/kibana.git
 
-Tags: 7.11.1
-GitCommit: 877c9667aa8ee261416bb5a23ac16f59e0a21232
+Tags: 7.11.2
+GitCommit: 26d3606c64d6abb047aa74e6b7f4c22cc3fc5a4f
 Directory: 7
 
 Tags: 6.8.14

library/logstash

@@ -4,8 +4,8 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/logstash.git
 
-Tags: 7.11.1
-GitCommit: 2b17ad49cce713524f1442b4fe35494d81ae27dc
+Tags: 7.11.2
+GitCommit: 93759d0ebd12496805f239d4de088d7014def17f
 Directory: 7
 
 Tags: 6.8.14