Use 'uname -m' rather than 'uname -p' to avoid errors on Debian 12 (#… #405

Job	Run time
Buildbox tests (ubuntu-22.04, el7, x86_64)	49s
Buildbox tests (ubuntu-22.04, el7, aarch64)	40s
Buildbox tests (ubuntu-22.04, el7, ppc64le)	46s
Buildbox tests (ubuntu-22.04, el8, x86_64)	47s
Buildbox tests (ubuntu-22.04, el8, aarch64)	50s
Buildbox tests (ubuntu-22.04, el8, ppc64le)	45s
Buildbox tests (ubuntu-22.04, el9, x86_64)	35s
Buildbox tests (ubuntu-22.04, el9, aarch64)	41s
Buildbox tests (ubuntu-22.04, el9, ppc64le)	41s
Buildbox tests (ubuntu-22.04, ubuntu-20.04, x86_64)	49s
Buildbox tests (ubuntu-22.04, ubuntu-20.04, aarch64)	41s
Buildbox tests (ubuntu-22.04, ubuntu-22.04, x86_64)	10s
Buildbox tests (ubuntu-22.04, ubuntu-22.04, aarch64)	47s
Buildbox tests (ubuntu-22.04, debian-12, x86_64)	46s
Buildbox tests (ubuntu-22.04, debian-12, aarch64)	40s
Buildbox tests (ubuntu-22.04, debian-12, ppc64le)	43s
Buildbox tests (ubuntu-22.04, amzn2023, x86_64)	39s
Buildbox tests (ubuntu-22.04, amzn2023, aarch64)	45s
Package ${{ matrix.package }} dist=${{ matrix.dist }} arch=${{ matrix.arch }}	1s
Package test package=${{ matrix.package }} dist=${{ matrix.dist }} arch=${{ matrix.arch }}	1s
Package test package=${{ matrix.package }} dist=${{ matrix.dist }} arch=${{ matrix.arch }}	1s
	12m 37s

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