Update .ci/bwcVersions with 6.8.3 (#46427)

Looks like this is required after #46354.
elastic · Sep 6, 2019 · c7326d2 · c7326d2
1 parent e2e4121
commit c7326d2
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/.ci/bwcVersions b/.ci/bwcVersions
@@ -69,3 +69,4 @@ BWC_VERSION:
   - "6.8.0"
   - "6.8.1"
   - "6.8.2"
+  - "6.8.3"