Update golang version, client-go and elasticsearch client dependencies

Signed-off-by: Raul Sevilla <rsevilla@redhat.com>

.github/workflows/go.yml

@@ -20,11 +20,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        golang-version: [1.14, 1.15]
+        golang-version: [1.15, 1.16]
         image-versions:
+        - kindest/node:v1.21.0
+        - kindest/node:v1.20.0
         - kindest/node:v1.19.0
-        - kindest/node:v1.18.0
-        - kindest/node:v1.17.0
     steps:
 
     - name: Set up Go 1.x

.github/workflows/release.yml

@@ -18,10 +18,10 @@ jobs:
         with:
           fetch-depth: 0 # See: https://goreleaser.com/ci/actions/
 
-      - name: Set up Go 1.14
+      - name: Set up Go 1.16
         uses: actions/setup-go@v2
         with:
-          go-version: 1.14
+          go-version: 1.16
         id: go
 
       - name: Run GoReleaser

go.mod

@@ -1,29 +1,22 @@
 module github.com/cloud-bulldozer/kube-burner
 
-go 1.14
+go 1.16
 
 require (
-	github.com/elastic/go-elasticsearch/v7 v7.8.0
-	github.com/google/go-cmp v0.5.1 // indirect
+	github.com/elastic/go-elasticsearch/v7 v7.13.1
 	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/imdario/mergo v0.3.10 // indirect
 	github.com/prometheus/client_golang v1.7.1
 	github.com/prometheus/common v0.11.1
 	github.com/sirupsen/logrus v1.6.0
 	github.com/spf13/cast v1.3.1
-	github.com/spf13/cobra v1.0.0
-	github.com/stretchr/testify v1.5.1 // indirect
-	golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de // indirect
-	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d // indirect
-	golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e
+	github.com/spf13/cobra v1.1.3
+	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba
 	google.golang.org/appengine v1.6.6 // indirect
-	google.golang.org/protobuf v1.25.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776
-	k8s.io/api v0.19.6
-	k8s.io/apimachinery v0.19.6
-	k8s.io/client-go v0.19.6
-	k8s.io/klog/v2 v2.3.0 // indirect
-	k8s.io/kubectl v0.19.6
-	k8s.io/utils v0.0.0-20200731180307-f00132d28269 // indirect
+	k8s.io/api v0.21.1
+	k8s.io/apimachinery v0.21.1
+	k8s.io/client-go v0.21.1
+	k8s.io/kubectl v0.21.1
 )