Merge pull request #33660 from hashicorp/d-aws_s3_object-metadata-key…

…s-lowercase

S3 Object `metadata` keys are returned in lowercase

.changelog/33660.txt

@@ -0,0 +1,15 @@
+```release-note:breaking-change
+data-source/aws_s3_object: Following migration to [AWS SDK for Go v2](https://aws.github.io/aws-sdk-go-v2/), the `metadata` attribute's [keys](https://developer.hashicorp.com/terraform/language/expressions/types#maps-objects) are always [returned in lowercase](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/s3#HeadObjectOutput)
+```
+
+```release-note:note
+data-source/aws_s3_object: The `metadata` attribute's keys are now always returned in lowercase. Please modify configurations as necessary
+```
+
+```release-note:breaking-change
+data-source/aws_s3_bucket_object: Following migration to [AWS SDK for Go v2](https://aws.github.io/aws-sdk-go-v2/), the `metadata` attribute's [keys](https://developer.hashicorp.com/terraform/language/expressions/types#maps-objects) are always [returned in lowercase](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/s3#HeadObjectOutput)
+```
+
+```release-note:note
+data-source/aws_s3_bucket_object: The `metadata` attribute's keys are now always returned in lowercase. Please modify configurations as necessary
+```

website/docs/d/s3_bucket_object.html.markdown

@@ -79,7 +79,7 @@ This data source exports the following attributes in addition to the arguments a
 * `expiration` - If the object expiration is configured (see [object lifecycle management](http://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.html)), the field includes this header. It includes the expiry-date and rule-id key value pairs providing object expiration information. The value of the rule-id is URL encoded.
 * `expires` - Date and time at which the object is no longer cacheable.
 * `last_modified` - Last modified date of the object in RFC1123 format (e.g., `Mon, 02 Jan 2006 15:04:05 MST`)
-* `metadata` - Map of metadata stored with the object in S3
+* `metadata` - Map of metadata stored with the object in S3. [Keys](https://developer.hashicorp.com/terraform/language/expressions/types#maps-objects) are always returned in lowercase.
 * `object_lock_legal_hold_status` - Indicates whether this object has an active [legal hold](https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock-overview.html#object-lock-legal-holds). This field is only returned if you have permission to view an object's legal hold status.
 * `object_lock_mode` - Object lock [retention mode](https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock-overview.html#object-lock-retention-modes) currently in place for this object.
 * `object_lock_retain_until_date` - The date and time when this object's object lock will expire.

website/docs/d/s3_object.html.markdown

@@ -82,7 +82,7 @@ This data source exports the following attributes in addition to the arguments a
 * `expiration` - If the object expiration is configured (see [object lifecycle management](http://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.html)), the field includes this header. It includes the expiry-date and rule-id key value pairs providing object expiration information. The value of the rule-id is URL encoded.
 * `expires` - Date and time at which the object is no longer cacheable.
 * `last_modified` - Last modified date of the object in RFC1123 format (e.g., `Mon, 02 Jan 2006 15:04:05 MST`)
-* `metadata` - Map of metadata stored with the object in S3
+* `metadata` - Map of metadata stored with the object in S3. [Keys](https://developer.hashicorp.com/terraform/language/expressions/types#maps-objects) are always returned in lowercase.
 * `object_lock_legal_hold_status` - Indicates whether this object has an active [legal hold](https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock-overview.html#object-lock-legal-holds). This field is only returned if you have permission to view an object's legal hold status.
 * `object_lock_mode` - Object lock [retention mode](https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock-overview.html#object-lock-retention-modes) currently in place for this object.
 * `object_lock_retain_until_date` - The date and time when this object's object lock will expire.