MM-32048: Upgrade dependencies (#16765)

```release-note
Updated Go dependencies to their latest minor version
```

https://mattermost.atlassian.net/browse/MM-32048

vendor/github.com/PuerkitoBio/goquery/.travis.yml

@@ -1,3 +1,6 @@
+arch:
+    - amd64
+    - ppc64le
 language: go
 
 go:
@@ -15,3 +18,27 @@ go:
     - 1.13.x
     - tip
 
+jobs:
+ exclude:
+    - arch: ppc64le
+      go: 1.2.x
+    - arch: ppc64le
+      go: 1.3.x
+    - arch: ppc64le
+      go: 1.4.x
+    - arch: ppc64le
+      go: 1.5.x
+    - arch: ppc64le
+      go: 1.6.x
+    - arch: ppc64le
+      go: 1.7.x
+    - arch: ppc64le
+      go: 1.8.x
+    - arch: ppc64le
+      go: 1.9.x
+    - arch: ppc64le
+      go: 1.10.x
+    - arch: ppc64le
+      go: 1.11.x
+    - arch: ppc64le
+      go: 1.12.x

vendor/github.com/PuerkitoBio/goquery/README.md

@@ -37,6 +37,7 @@ Please note that because of the net/html dependency, goquery requires Go1.1+.
 
 **Note that goquery's API is now stable, and will not break.**
 
+*    **2021-01-11 (v1.6.1)** : Fix panic when calling `{Prepend,Append,Set}Html` on a `Selection` that contains non-Element nodes.
 *    **2020-10-08 (v1.6.0)** : Parse html in context of the container node for all functions that deal with html strings (`AfterHtml`, `AppendHtml`, etc.). Thanks to [@thiemok][thiemok] and [@davidjwilkins][djw] for their work on this.
 *    **2020-02-04 (v1.5.1)** : Update module dependencies.
 *    **2018-11-15 (v1.5.0)** : Go module support (thanks @Zaba505).
@@ -147,6 +148,7 @@ func main() {
 - [Dataflow kit](https://github.com/slotix/dataflowkit), Web Scraping framework for Gophers.
 - [Geziyor](https://github.com/geziyor/geziyor), a fast web crawling & scraping framework for Go. Supports JS rendering.
 - [Pagser](https://github.com/foolin/pagser), a simple, easy, extensible, configurable HTML parser to struct based on goquery and struct tags.
+- [stitcherd](https://github.com/vhodges/stitcherd), A server for doing server side includes using css selectors and DOM updates.
 
 ## Support
 

vendor/github.com/PuerkitoBio/goquery/manipulation.go

@@ -661,6 +661,9 @@ func (s *Selection) eachNodeHtml(htmlStr string, isParent bool, mergeFn func(n *
 		if isParent {
 			context = n.Parent
 		} else {
+			if n.Type != html.ElementNode {
+				continue
+			}
 			context = n
 		}
 		if context != nil {