Update AWS packages (#8334) (#8360)

* Update AWS packages

* Fix build issues

Co-authored-by: Wiktor Kopec <[email protected]>

Author: github-actions[bot]

eng/dependabot/independent/Versions.props

@@ -14,8 +14,8 @@
     <!-- Third-party references -->
     <NewtonsoftJsonVersion>13.0.3</NewtonsoftJsonVersion>
     <NJsonSchemaVersion>11.0.0</NJsonSchemaVersion>
-    <AwsSdkS3Version>3.7.305.7</AwsSdkS3Version>
-    <AwsSdkSecurityTokenVersion>3.7.300.33</AwsSdkSecurityTokenVersion>
+    <AwsSdkS3Version>4.0.0.3</AwsSdkS3Version>
+    <AwsSdkSecurityTokenVersion>4.0.0.2</AwsSdkSecurityTokenVersion>
 
     <!--
       Moq version & constants derived from Moq.

src/Extensions/S3Storage/S3Storage.cs

@@ -4,6 +4,7 @@
 using Amazon;
 using Amazon.Runtime;
 using Amazon.Runtime.CredentialManagement;
+using Amazon.Runtime.Credentials;
 using Amazon.S3;
 using Amazon.S3.Model;
 using Amazon.S3.Transfer;
@@ -72,17 +73,11 @@ public static async Task<IS3Storage> CreateAsync(S3StorageEgressProviderOptions
                     throw new AmazonClientException("AWS profile not found");
             }
 
-            awsCredentials ??= FallbackCredentialsFactory.GetCredentials();
+            awsCredentials ??= DefaultAWSCredentialsIdentityResolver.GetCredentials();
 
             if (awsCredentials == null)
                 throw new AmazonClientException("Failed to find AWS Credentials for constructing AWS service client");
 
-            if (options.UseKmsEncryption)
-            {
-                // Required for generating pre-signed URLs with KMS encryption
-                AWSConfigsS3.UseSignatureVersion4 = true;
-            }
-
             IAmazonS3 s3Client = new AmazonS3Client(awsCredentials, configuration);
             bool exists = await AmazonS3Util.DoesS3BucketExistV2Async(s3Client, options.BucketName);
             if (!exists)
@@ -173,7 +168,7 @@ public async Task<PartETag> UploadPartAsync(string uploadId, int partNumber, int
                 PartNumber = partNumber
             };
             var response = await _s3Client.UploadPartAsync(uploadRequest, token);
-            return new PartETag(response.PartNumber, response.ETag);
+            return new PartETag(response.PartNumber ?? partNumber, response.ETag);
         }
 
         public string GetTemporaryResourceUrl(DateTime expires)