ci: run independent setup steps in parallel

Use the GitHub Actions parallel-steps feature (2026-06-25) to group
setup steps with no dependency between them: checkout, toolchains
(Bun/JDK/Xcode), the EAS CLI install and the disk-space cleanup now run
concurrently, and the Bun/Gradle cache restores overlap. On the iOS
jobs, Xcode/EAS setup previously ran after the ~2 min prebuild despite
not needing it.

Also in release.yml: queue successive release runs in order
(queue: max) instead of dropping the extra pending run, and fix the
expo-github-action pin comment (the pinned SHA is tag v9.0.0, not
main).

.github/workflows/detect-duplicate.yml

@@ -20,14 +20,15 @@ jobs:
       issues: write
       contents: read
     steps:
-      - name: 📥 Checkout repository
-        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - parallel:
+          - name: 📥 Checkout repository
+            uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
-      - name: 🍞 Setup Bun
-        uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
-        with:
-          # renovate: datasource=npm depName=bun
-          bun-version: "1.3.14"
+          - name: 🍞 Setup Bun
+            uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
+            with:
+              # renovate: datasource=npm depName=bun
+              bun-version: "1.3.14"
 
       - name: 🔍 Detect duplicate issues
         run: bun scripts/detect-duplicate-issue.ts