kernel-6.12: enable FIPS support

[ginglis13]

Issue number:

Closes #262

Description of changes:

Remove FIPS conflict and update FIPS module lists to enable FIPS for kernel 6.12.

FIPS module list changes found following these steps for both architectures:

1. Launch AL2023 instance
2. Enable FIPS mode on the instance following https://docs.aws.amazon.com/linux/al2023/ug/fips-mode.html
3. Extract initramfs with lsinitrd --unpack
4. List of modules provided in <initramfs>/etc/fipsmodules

Testing done:

Custom aarch64 k8s-1.33-fips variant:

[ssm-user@control]$ apiclient report fips
Benchmark name:  FIPS Security Policy
Version:         v1.0.0
Reference:       https://csrc.nist.gov/
Benchmark level: 1
Start time:      2025-09-03T21:48:30.825448753Z

[PASS] 1.0       FIPS mode is enabled. (Automatic)
[PASS] 1.1       FIPS module is Amazon Linux 2023 Kernel Cryptographic API. (Automatic)
[PASS] 1.2       FIPS self-tests passed. (Automatic)

Passed:          3
Failed:          0
Skipped:         0
Total checks:    3

Compliance check result: PASS
[ssm-user@control]$ apiclient get os
{
  "os": {
    "arch": "aarch64",
    "build_id": "431fe75a-dirty",
    "pretty_name": "Bottlerocket OS 1.46.0 (aws-k8s-1.33-fips)",
    "variant_id": "aws-k8s-1.33-fips",
    "version_id": "1.46.0"
  }
}

Custom x86_64 k8s-1.33-fips variant:

[ssm-user@control]$ apiclient report fips
Benchmark name:  FIPS Security Policy
Version:         v1.0.0
Reference:       https://csrc.nist.gov/
Benchmark level: 1
Start time:      2025-09-03T21:43:02.091923361Z

[PASS] 1.0       FIPS mode is enabled. (Automatic)
[PASS] 1.1       FIPS module is Amazon Linux 2023 Kernel Cryptographic API. (Automatic)
[PASS] 1.2       FIPS self-tests passed. (Automatic)

Passed:          3
Failed:          0
Skipped:         0
Total checks:    3

Compliance check result: PASS
[ssm-user@control]$ apiclient get os
{
  "os": {
    "arch": "x86_64",
    "build_id": "431fe75a-dirty",
    "pretty_name": "Bottlerocket OS 1.46.0 (aws-k8s-1.33-fips)",
    "variant_id": "aws-k8s-1.33-fips",
    "version_id": "1.46.0"
  }
}

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.