fix(ci): increase tmpfs size to 10GB for test container

objcopy failed with 'No space left on device' when creating UKI.
Use --tmpfs with 10GB limit to provide sufficient space.

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Author: imlk0

.github/workflows/build-rpm.yml

@@ -177,6 +177,7 @@ jobs:
             -v /dev:/dev \
             -v /run/udev/control:/run/udev/control \
             -v ${{ github.workspace }}:/workspace \
+            --tmpfs /tmp:exec,size=10G \
             alibaba-cloud-linux-3-registry.cn-hangzhou.cr.aliyuncs.com/alinux3/alinux3:latest \
             sleep infinity