chore: remove outdated version tags from GitHub Actions (#457)

## Summary
- Removes version comment tags (e.g. `#v4`, `#v5`) from all GitHub
Actions workflow files
- These tags become incorrect when Dependabot updates the action SHAs
- The SHA pins are sufficient for version control

## Context
This addresses @domdomegg's comment in #453 about these tags becoming
outdated when using Dependabot. The SHAs already provide version
pinning, making the comment tags redundant and potentially misleading.

## Changes
- Removed version tags from all `uses:` statements in
`.github/workflows/*.yml`
- No functional changes to workflows

.github/workflows/release.yml

@@ -14,23 +14,23 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 #v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
         with:
           fetch-depth: 0
 
       - name: Set up Go
-        uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 #v5
+        uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00
         with:
           go-version-file: 'go.mod'
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 #v3
+        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159
 
       - name: Install Syft
         uses: anchore/sbom-action/download-syft@v0.20.5
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@e435ccd777264be153ace6237001ef4d979d3a7a #v6
+        uses: goreleaser/goreleaser-action@e435ccd777264be153ace6237001ef4d979d3a7a
         with:
           distribution: goreleaser
           version: v2.12.0
@@ -43,13 +43,13 @@ jobs:
     needs: goreleaser
     steps:
       - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 #v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 #v3
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435
 
       - name: Log in to Container Registry
-        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 #v3
+        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -57,7 +57,7 @@ jobs:
 
       - name: Extract metadata
         id: meta
-        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f #v5
+        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f
         with:
           images: ghcr.io/${{ github.repository }}
           tags: |
@@ -65,7 +65,7 @@ jobs:
             type=raw,value=latest
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 #v5
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83
         with:
           context: .
           file: ./Dockerfile