build(deps): bump Mic92/hestia from 2 to 3

[dependabot]

Bumps Mic92/hestia from 2 to 3.

Release notes

Sourced from Mic92/hestia's releases.

v3.0.0

Usage

- uses: Mic92/hestia@v3
  with:
    version: v3.0.0

Build matrix: eval once, build in parallel

New Mic92/hestia/matrix subaction. An eval job runs nix-eval-jobs, uploads each check's .drv closure to the cache, and outputs a matrix of the checks that still need building. Build jobs fetch their derivation from the cache and build by store path: no per-job evaluation, no flake changes, and no job for checks whose results are already cached. Example workflow in the README.

Larger FastCDC chunks (cache reset)

Chunk sizes go from 16/64/256 KiB to 64/256/1024 KiB (min/avg/max). Dedup is nearly unchanged, encoded manifests shrink by 26-35 % and chunking time drops by about 40 % (drain 51.9s -> 40.2s on a 14.7 GiB system closure).

Chunk boundaries are part of the cache format, so v3 starts a fresh manifest namespace: the first runs after upgrading upload from a cold cache, old packs age out through GC and eviction.

Faster substitution

• Closure export endpoint: prefetch a whole closure in one request instead of per-path lookups.
• Pack reads are coalesced across gaps and read ahead.
• Reference normalization no longer copies whole files.

Full changelog: Mic92/hestia@v2.0.0...v3.0.0

Commits

• b21a1aa release: bump version to 3.0.0
• 42b7968 README: reference the v3 action tags
• 154243a docs: document eval-once / build-by-drv-path workflow
• 91a0e07 Merge pull request #114 from Mic92/dependabot/cargo/thiserror-2.0.19
• aaa3885 build(deps): bump thiserror from 2.0.18 to 2.0.19
• 2d8a1d2 Merge pull request #113 from Mic92/dependabot/cargo/futures-util-0.3.33
• 8df5f4f Merge pull request #109 from Mic92/dependabot/cargo/serde_json-1.0.151
• 75000a7 Merge pull request #112 from Mic92/dependabot/nix/crane-1316b7d
• be36192 Merge pull request #107 from Mic92/dependabot/cargo/serde-1.0.229
• 2dae27d Merge pull request #111 from Mic92/dependabot/cargo/clap-4.6.3
• Additional commits viewable in compare view

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