Build with cgo disabled to make plugin work on alpine

Author: hypnoglow

.goreleaser.yml

@@ -1,6 +1,8 @@
 builds:
   - main: ./cmd/helms3
     binary: ./bin/helms3
+    env:
+      - CGO_ENABLED=0
     goos:
       - darwin
       - linux

plugin.yaml

@@ -1,5 +1,5 @@
 name: "s3"
-version: "0.2.1"
+version: "0.2.2"
 usage: "The plugin allows to use s3 protocol to upload, fetch charts and to work with repositories."
 description: |-
   Provides AWS S3 protocol support.