🔧 fix: bump dagger v0.20.6 → v0.20.8

[yeazelm]

Summary

• The release pipeline has been failing because the engine pinned in each module's dagger.json (v0.20.6) and the CLI installed by dagger-for-github no longer round-trip cleanly with the current daggerverse modules. The version handshake fails before dagger call reaches user code.
• Bumps engineVersion in every module (bucketupload, checksum, ghcontrib, ghrelease, go, golangcilint, utils) and DAGGER_VERSION in the PR workflow to v0.20.8, matching the rest of the org repos (e.g. paper PR #40) that have already moved.

Refs PCC-543

Test plan

• PR workflow passes on this PR
• Downstream consumers (paper, tapes-extproc, etc.) keep working after this merges

[linear-code]

PCC-543

[greptile-apps]

Greptile Summary

This PR fixes a failing release pipeline by synchronizing the Dagger engine version across all modules and the CI workflow, bumping from v0.20.6 to v0.20.8.

• All seven module dagger.json files (bucketupload, checksum, ghcontrib, ghrelease, go, golangcilint, utils) have their engineVersion updated from v0.20.6 to v0.20.8.
• The DAGGER_VERSION env var in .github/workflows/pr.yaml is updated to match, ensuring the CLI installed by dagger-for-github aligns with the engine pinned in each module.

Confidence Score: 5/5

Safe to merge — all changes are a uniform version string update with no logic modifications.

Every changed file performs exactly the same mechanical update: replacing the Dagger version string from v0.20.6 to v0.20.8. The workflow env var and all seven module manifests are updated consistently, leaving no version mismatch between the CLI installer and the module engine pins.

No files require special attention.

Important Files Changed

Filename	Overview
.github/workflows/pr.yaml	Bumps DAGGER_VERSION env var from 0.20.6 to 0.20.8 to match module engine versions
bucketupload/dagger.json	engineVersion bumped from v0.20.6 to v0.20.8
checksum/dagger.json	engineVersion bumped from v0.20.6 to v0.20.8
ghcontrib/dagger.json	engineVersion bumped from v0.20.6 to v0.20.8
ghrelease/dagger.json	engineVersion bumped from v0.20.6 to v0.20.8
go/dagger.json	engineVersion bumped from v0.20.6 to v0.20.8
golangcilint/dagger.json	engineVersion bumped from v0.20.6 to v0.20.8
utils/dagger.json	engineVersion bumped from v0.20.6 to v0.20.8

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[PR Workflow Triggered] --> B[dagger-for-github installs CLI\nDAGGER_VERSION=0.20.8]
    B --> C{CLI ↔ Engine\nVersion Handshake}
    C -->|v0.20.6 - FAIL| D[❌ Pipeline fails before\nuser code is reached]
    C -->|v0.20.8 - PASS| E[✅ dagger call proceeds]
    E --> F[bucketupload\nv0.20.8]
    E --> G[checksum\nv0.20.8]
    E --> H[ghcontrib\nv0.20.8]
    E --> I[ghrelease\nv0.20.8]
    E --> J[go\nv0.20.8]
    E --> K[golangcilint\nv0.20.8]
    E --> L[utils\nv0.20.8]

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_{Reviews (1): Last reviewed commit: "🔧 fix: bump dagger v0.20.6 → v0.20.8" | Re-trigger Greptile}