Update docker-library images

- `elasticsearch`: 5.5.0
- `logstash`: 5.5.0

library/elasticsearch

@@ -4,12 +4,12 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/elasticsearch.git
 
-Tags: 5.4.3, 5.4, 5, latest
-GitCommit: ea76a1f9e5589a1b9a9bcab1022df7953af81b87
+Tags: 5.5.0, 5.5, 5, latest
+GitCommit: 4da4e5e485e78c150b018364585d07434b704d95
 Directory: 5
 
-Tags: 5.4.3-alpine, 5.4-alpine, 5-alpine, alpine
-GitCommit: ea76a1f9e5589a1b9a9bcab1022df7953af81b87
+Tags: 5.5.0-alpine, 5.5-alpine, 5-alpine, alpine
+GitCommit: 4da4e5e485e78c150b018364585d07434b704d95
 Directory: 5/alpine
 
 Tags: 2.4.5, 2.4, 2

library/logstash

@@ -4,16 +4,16 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/logstash.git
 
-Tags: 5.4.3, 5.4, 5, latest
-GitCommit: bdde1cd454f189dcad01c82a2ebaa729c406cc6f
+Tags: 5.5.0, 5.5, 5, latest
+GitCommit: 4f425e9008de3d0375d1749d390029808aed8d96
 Directory: 5
 
-Tags: 5.4.3-alpine, 5.4-alpine, 5-alpine, alpine
-GitCommit: bdde1cd454f189dcad01c82a2ebaa729c406cc6f
+Tags: 5.5.0-alpine, 5.5-alpine, 5-alpine, alpine
+GitCommit: a418c50f6258665e72ef5f6275a69685a01107ef
 Directory: 5/alpine
 
 Tags: 2.4.1, 2.4, 2
-GitCommit: 19330c802e6f198f015c0c4723a6d86ed449d93f
+GitCommit: 4f425e9008de3d0375d1749d390029808aed8d96
 Directory: 2.4
 
 Tags: 2.4.1-alpine, 2.4-alpine, 2-alpine