docs(iac/get-started/aws/create-project): update go sdk import v6 -> v7

[MFarabi619]

Proposed changes

The following Go snippet in https://www.pulumi.com/docs/iac/get-started/aws/modify-program/ refuses to compile.

// Bucket ...

// Turn the bucket into a website:
website, err := s3.NewBucketWebsiteConfiguration(ctx, "website", &s3.BucketWebsiteConfigurationArgs{
    Bucket: bucket.ID(),
    IndexDocument: &s3.BucketWebsiteConfigurationIndexDocumentArgs{
        Suffix: pulumi.String("index.html"),
    },
})
if err != nil {
    return err
}

// Permit access control configuration:
ownershipControls, err := s3.NewBucketOwnershipControls(ctx, "ownership-controls", &s3.BucketOwnershipControlsArgs{
    Bucket: bucket.ID(),
    Rule: &s3.BucketOwnershipControlsRuleArgs{
        ObjectOwnership: pulumi.String("ObjectWriter"),
    },
})
if err != nil {
    return err
}

// Enable public access to the website:
publicAccessBlock, err := s3.NewBucketPublicAccessBlock(ctx, "public-access-block", &s3.BucketPublicAccessBlockArgs{
    Bucket:          bucket.ID(),
    BlockPublicAcls: pulumi.Bool(false),
})
if err != nil {
    return err
}

Update Go SDK import from v6 -> v7.

It works 🥳.

Unreleased product version (optional)

N/A

Related issues (optional)

Closes #16685.

[MFarabi619]

A quick grep through the codebase reveals ten more hits in the codebase for the Go v6 SDK import.