release v0.9.7: kernel_range drift fix + CI Node 24 readiness

Tags the maintenance work landed since v0.9.6. The fragnesia drift fix (35c33df) and checkout v4->v6 bump (6c148e2) are already on main; this commit adds the remaining CI Node-24 bumps + version strings.

release.yml: upload-artifact v4->v7, download-artifact v4->v8, softprops/action-gh-release v2->v3 (last of the Node-20-era actions; GitHub forces node24 on 2026-06-16). Reviewed each changelog — our default-zip/unique-name upload + full-set download is unaffected by the major-version breaking changes (opt-in direct uploads, download-by-ID path).

Version bumped to 0.9.7 (skeletonkey.c, README, docs/index.html) + v0.9.7 RELEASE_NOTES entry. Tagging this commit fires release.yml — the end-to-end test of the new artifact actions, incl. the Alpine/musl static job under node24.

.github/workflows/release.yml

@@ -52,7 +52,7 @@ jobs:
           mv skeletonkey skeletonkey-${{ matrix.target }}
           sha256sum skeletonkey-${{ matrix.target }} > skeletonkey-${{ matrix.target }}.sha256
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: skeletonkey-${{ matrix.target }}
           path: |
@@ -87,7 +87,7 @@ jobs:
         run: |
           mv skeletonkey skeletonkey-x86_64-static
           sha256sum skeletonkey-x86_64-static > skeletonkey-x86_64-static.sha256
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: skeletonkey-x86_64-static
           path: |
@@ -130,7 +130,7 @@ jobs:
         run: |
           mv skeletonkey skeletonkey-arm64-static
           sha256sum skeletonkey-arm64-static > skeletonkey-arm64-static.sha256
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: skeletonkey-arm64-static
           path: |
@@ -143,7 +143,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v8
         with:
           path: dist
 
@@ -181,7 +181,7 @@ jobs:
           fi
 
       - name: publish release
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v3
         with:
           tag_name: ${{ steps.notes.outputs.tag }}
           name: SKELETONKEY ${{ steps.notes.outputs.tag }}