Add swap file adjustment for webapp build #207

Job	Run time
bullseye armv7 / build	3m 0s
bookworm armv7 / build	3m 49s
bullseye armv7 / test (run_install_common.sh)	6m 35s
bullseye armv7 / test (run_install_faststartup.sh)	6m 36s
bullseye armv7 / test (run_install_webapp_local.sh)	6m 34s
bullseye armv7 / test (run_install_webapp_download.sh)	6m 35s
bullseye armv7 / test (run_install_libzmq_local.sh)	6m 36s
bookworm armv7 / test (run_install_common.sh)	5m 42s
bookworm armv7 / test (run_install_faststartup.sh)	5m 43s
bookworm armv7 / test (run_install_webapp_local.sh)	5m 42s
bookworm armv7 / test (run_install_webapp_download.sh)	5m 43s
bookworm armv7 / test (run_install_libzmq_local.sh)	5m 43s
bookworm armv7 / cleanup	4s
bullseye armv7 / cleanup	7s
	1h 8m 29s

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