ci: increase job timeout to 8h for riscv64 build

Node.js v24.5.0 on riscv64 takes more than 6 hours to compile V8,
hitting the default GitHub Actions timeout. Set timeout-minutes to
480 (8h) to let the build complete.

Signed-off-by: Bruno Verachten <gounthar@gmail.com>

Author: gounthar

.github/workflows/build-static-node.yml

@@ -29,6 +29,7 @@ jobs:
   build:
     runs-on: ${{ matrix.IMAGE.RUNNER }}
     needs: load-node-versions
+    timeout-minutes: 480
     permissions:
       contents: read
       packages: write