Update github.com/issue9/identicon from untagged to v1.0.1 (#11359)

Co-authored-by: zeripath <art27@cantab.net>

vendor/github.com/issue9/identicon/.travis.yml

@@ -1,10 +1,20 @@
 language: go
+
+os:
+  - linux
+  - osx
+  - windows
+
 go:
-    - tip
-    - 1.6
-    - 1.5
-    - 1.4
-    - 1.3
-install:
-    - go get github.com/issue9/assert
-    - mkdir ./testdata
+  - tip
+  - 1.12
+  - 1.11
+
+script:
+  - GO111MODULE=on go test -v -coverprofile=coverage.txt -covermode=atomic ./...
+
+after_success: bash <(curl -s https://codecov.io/bash)
+
+matrix:
+  allow_failures:
+    - go: tip