chore(deps): bump filippo.io/age from 1.2.1 to 1.3.1

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Bumps filippo.io/age from 1.2.1 to 1.3.1.

Release notes

Sourced from filippo.io/age's releases.

v1.3.1 is a minor release to restore version injection from downstream package build processes.

See the v1.3.0 release notes for an overview of recent additions.

age v1.3.0: post-quantum (and more)!

Exactly six years after the first age beta release, v1.3.0 brings post-quantum resistance to age, along with a couple long-requested features, built-in support for recipients compatible with hardware plugins, I/O API improvements, and many usability enhancements.

Post-quantum recipients

age now has native post-quantum recipients based on HPKE with a hybrid ML-KEM-768 KEM. The recipients start with age1pq1..., and the identities start with AGE-SECRET-KEY-PQ-1....

To generate a post-quantum keypair:

$ age-keygen -pq

If you have your own age implementation, C2SP has the specification, and CCTV has test vectors for the new hybrid recipient types.

(If you are using an older age client, an optional plugin is available that provides out-of-the-box support for encryption to hybrid recipients. Hybrid identities can be converted to work with the plugin with age-plugin-pq -identity.)

New I/O APIs

The new DecryptReaderAt API implements seeking decryption, which can be used with zip.NewReader.

The new EncryptReader API implements pull-based encryption by wrapping an io.Reader, as opposed to wrapping an io.Writer like Encrypt.

age-inspect

The new age-inspect(1) tool presents the metadata of an age file without decrypting it.

hello.age is an age file, version "age-encryption.org/v1".
This file is ASCII-armored.
This file is encrypted to the following recipient types:

"mlkem768x25519"

This file uses post-quantum encryption.
Size breakdown (assuming it decrypts successfully):
Header                      1627 bytes
Armor overhead              1350 bytes
Encryption overhead           32 bytes
Payload                     1959 bytes
                    -------------------

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Commits

• b8564ad .github/workflows: inject version into source release artifact
• e4c611f cmd,extra: restore the Version link-time variable
• 6a8065f SIGSUM.md: update policy for v1.3.0
• 50a600e .github/workflows: improve release reproducibility
• 13aab81 .github/workflows: build and release source tarball
• 52338c2 .github/workflows: enable GitHub artifact attestation
• b70af41 cmd/age: don't output binary plaintext to terminal
• 4202739 internal/stream: fix DecryptReaderAt concurrency
• da21917 age: add ExampleDecryptReaderAt with zip.NewReader
• 2ff5d34 age: add DecryptReaderAt
• Additional commits viewable in compare view

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