Add swap file adjustment for webapp build #180

Job	Run time
bookworm armv7 / build	4m 5s
bullseye armv7 / build	4m 44s
bookworm armv7 / test (run_install_common.sh)	12m 37s
bookworm armv7 / test (run_install_faststartup.sh)	9m 26s
bookworm armv7 / test (run_install_webapp_local.sh)	20m 19s
bookworm armv7 / test (run_install_webapp_download.sh)	12m 28s
bookworm armv7 / test (run_install_libzmq_local.sh)	24m 8s
bullseye armv7 / test (run_install_common.sh)	12m 33s
bullseye armv7 / test (run_install_faststartup.sh)	9m 25s
bullseye armv7 / test (run_install_webapp_local.sh)	11m 39s
bullseye armv7 / test (run_install_webapp_download.sh)	13m 47s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 6s
bullseye armv7 / cleanup	0s
bookworm armv7 / cleanup	4s
	2h 38m 21s

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