fix: go1.17 style build tags on all files

AaronFriel · AaronFriel · commit 4ee0e38219e1 · 2022-08-23T14:03:49.000-07:00
diff --git a/sshagent.go b/sshagent.go
@@ -14,6 +14,7 @@
 // limitations under the License.
 //
 
+//go:build !windows
 // +build !windows
 
 package sshagent
