Update module github.com/aws/aws-sdk-go to v1.55.6

Author: renovate[bot]

go.mod

@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/aws/aws-lambda-go v1.48.0
-	github.com/aws/aws-sdk-go v1.55.5
+	github.com/aws/aws-sdk-go v1.55.6
 	github.com/kr/pretty v0.3.1 // indirect
 	github.com/rogpeppe/go-internal v1.12.0 // indirect
 	github.com/stretchr/testify v1.8.4 // indirect

go.sum

@@ -4,6 +4,8 @@ github.com/aws/aws-lambda-go v1.48.0 h1:1aZUYsrJu0yo5fC4z+Rba1KhNImXcJcvHu763Bxo
 github.com/aws/aws-lambda-go v1.48.0/go.mod h1:dpMpZgvWx5vuQJfBt0zqBha60q7Dd7RfgJv23DymV8A=
 github.com/aws/aws-sdk-go v1.55.5 h1:KKUZBfBoyqy5d3swXyiC7Q76ic40rYcbqH7qjh59kzU=
 github.com/aws/aws-sdk-go v1.55.5/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
+github.com/aws/aws-sdk-go v1.55.6 h1:cSg4pvZ3m8dgYcgqB97MrcdjUmZ1BeMYKUxMMB89IPk=
+github.com/aws/aws-sdk-go v1.55.6/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=