fix: harden supply chain security (#255)

* fix: patch smol-toml and tsdown vulnerabilities

Update smol-toml 1.6.0→1.6.1 (DoS via recursive comment parsing) and
tsdown 0.21.2→0.21.5 (picomatch ReDoS + method injection).

* fix: pin all unpinned dependency versions in Dockerfile

Pins subfinder v2.13.0, WhatWeb v0.6.3 (switched from git clone to
release tarball), schemathesis 4.13.0, addressable 2.8.9,
claude-code 2.1.84, and playwright-cli 0.1.1 for reproducible builds.

* fix: pin GitHub Actions to commit SHAs for supply chain security

* fix: pin GitHub Actions to commit SHAs in beta and rollback workflows

.github/workflows/release.yml

@@ -22,15 +22,15 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
 
       - name: Install pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v4.4.0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
           node-version: 24
           cache: 'pnpm'
@@ -74,20 +74,20 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
 
       - name: Log in to Docker Hub
-        uses: docker/login-action@v4
+        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push by digest
         id: build
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7.0.0
         with:
           context: .
           platforms: ${{ matrix.platform }}
@@ -102,7 +102,7 @@ jobs:
           touch "/tmp/digests/${digest#sha256:}"
 
       - name: Upload digest
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: digests-${{ matrix.platform == 'linux/amd64' && 'amd64' || 'arm64' }}
           path: /tmp/digests/*
@@ -121,17 +121,17 @@ jobs:
 
     steps:
       - name: Download digests
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           path: /tmp/digests
           pattern: digests-*
           merge-multiple: true
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
 
       - name: Log in to Docker Hub
-        uses: docker/login-action@v4
+        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -152,7 +152,7 @@ jobs:
           echo "digest=$DIGEST" >> "$GITHUB_OUTPUT"
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@v4.1.0
+        uses: sigstore/cosign-installer@ba7bc0a3fef59531c69a25acd34668d6d3fe6f22 # v4.1.0
 
       - name: Sign Docker image
         run: cosign sign --yes "keygraph/shannon@${{ steps.inspect.outputs.digest }}"
@@ -175,13 +175,13 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Install pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v4.4.0
 
       - name: Configure npm registry
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
           node-version: 24
           registry-url: https://registry.npmjs.org
@@ -219,15 +219,15 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
 
       - name: Install pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v4.4.0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
           node-version: 24
           cache: 'pnpm'