ci: add dry_release job

.github/workflows/release-preview.yml

@@ -0,0 +1,36 @@
+name: Release Preview
+"on":
+  pull_request:
+    types:
+      - opened
+      - synchronize
+permissions:
+  contents: read # for checkout
+jobs:
+  release-preview:
+    permissions:
+      issues: read # to be able to comment on released issues
+      pull-requests: read # to be able to comment on released pull requests
+    name: release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          fetch-depth: 0 # Required by semantic-release
+          # Use the pull request head ref (source branch) to ensure the dry run simulates a release for the current PR.
+          # LIMITATION: will probably not work with pull requests from forks forbidding read accesses.
+          ref: ${{ github.head_ref }}
+      - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6.2.0
+        with:
+          cache: npm
+          node-version: lts/*
+      - run: npm ci
+      # Perform a dry run without publishing anything.
+      #
+      # Unset the `GITHUB_ACTIONS` environment variable to trick semantic-release into thinking it's not running in a CI environment,
+      # as `--no-ci` alone is insufficient.
+      #
+      # Use `--branches "${GITHUB_HEAD_REF}"` to consider the PR head ref (source branch) as a release one for the dry run.
+      - run: |
+          unset GITHUB_ACTIONS
+          npx --no-install semantic-release --dry-run --no-ci --branches "${GITHUB_HEAD_REF}"