chore: upgrade coredns version (#550)

vendor/github.com/aws/aws-sdk-go-v2/credentials/ec2rolecreds/doc.go

@@ -0,0 +1,58 @@
+// Package ec2rolecreds provides the credentials provider implementation for
+// retrieving AWS credentials from Amazon EC2 Instance Roles via Amazon EC2 IMDS.
+//
+// # Concurrency and caching
+//
+// The Provider is not safe to be used concurrently, and does not provide any
+// caching of credentials retrieved. You should wrap the Provider with a
+// `aws.CredentialsCache` to provide concurrency safety, and caching of
+// credentials.
+//
+// # Loading credentials with the SDK's AWS Config
+//
+// The EC2 Instance role credentials provider will automatically be the resolved
+// credential provider in the credential chain if no other credential provider is
+// resolved first.
+//
+// To explicitly instruct the SDK's credentials resolving to use the EC2 Instance
+// role for credentials, you specify a `credentials_source` property in the config
+// profile the SDK will load.
+//
+//	[default]
+//	credential_source = Ec2InstanceMetadata
+//
+// # Loading credentials with the Provider directly
+//
+// Another way to use the EC2 Instance role credentials provider is to create it
+// directly and assign it as the credentials provider for an API client.
+//
+// The following example creates a credentials provider for a command, and wraps
+// it with the CredentialsCache before assigning the provider to the Amazon S3 API
+// client's Credentials option.
+//
+//	provider := imds.New(imds.Options{})
+//
+//	// Create the service client value configured for credentials.
+//	svc := s3.New(s3.Options{
+//	  Credentials: aws.NewCredentialsCache(provider),
+//	})
+//
+// If you need more control, you can set the configuration options on the
+// credentials provider using the imds.Options type to configure the EC2 IMDS
+// API Client and ExpiryWindow of the retrieved credentials.
+//
+//	provider := imds.New(imds.Options{
+//		// See imds.Options type's documentation for more options available.
+//		Client: imds.New(Options{
+//			HTTPClient: customHTTPClient,
+//		}),
+//
+//		// Modify how soon credentials expire prior to their original expiry time.
+//		ExpiryWindow: 5 * time.Minute,
+//	})
+//
+// # EC2 IMDS API Client
+//
+// See the github.com/aws/aws-sdk-go-v2/feature/ec2/imds module for more details on
+// configuring the client, and options available.
+package ec2rolecreds