chore(credential-provider-node): statically import credential-provider-env

[trivikr]

Issue

Internal JS-5156

Description

Statically imports @aws-sdk/credential-provider-node so that no additional time is spent on Lambda for dynamically importing the provider during request time.

Testing

The unit tests and integration tests are successful.

We benchmarked @aws-sdk/[email protected] (latest version at the time of PR) listTables operation for 100 counts before and after the change. In this sample benchmark, the request time at p50 is reduced by ~40ms or 4.3% with no change in init_duration.

Before

╔════════════════════════════════════════════╤════════════════════╤════════╤════════╤════════╗
║                                            │ metric             │ p50    │ p90    │ stdDev ║
╟────────────────────────────────────────────┼────────────────────┼────────┼────────┼────────╢
║ [node 20.12.0, x86_64, 128 MB, us-west-1]: │ init_duration (ms) │ 347.35 │ 369.93 │ 23.05  ║
║ Code (esm) with dynamodb list-tables       │ request (ms)       │ 932.98 │ 959.92 │ 64.98  ║
║ v3.556.0 (2.79 MB)                         │                    │        │        │        ║
╚════════════════════════════════════════════╧════════════════════╧════════╧════════╧════════╝

After

╔════════════════════════════════════════════╤════════════════════╤════════╤════════╤════════╗
║                                            │ metric             │ p50    │ p90    │ stdDev ║
╟────────────────────────────────────────────┼────────────────────┼────────┼────────┼────────╢
║ [node 20.12.0, x86_64, 128 MB, us-west-1]: │ init_duration (ms) │ 346.51 │ 371.8  │ 27.3   ║
║ Code (esm) with dynamodb list-tables       │ request (ms)       │ 894.77 │ 935.18 │ 93.3   ║
║ v3.556.0 (2.79 MB)                         │                    │        │        │        ║
╚════════════════════════════════════════════╧════════════════════╧════════╧════════╧════════╝

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