Add swap file adjustment for webapp build #165

Job	Run time
bookworm armv7 / build	3m 21s
bullseye armv7 / build	3m 11s
bullseye armv7 / test (run_install_common.sh)	15m 20s
bullseye armv7 / test (run_install_faststartup.sh)	10m 11s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 50s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 51s
bullseye armv7 / test (run_install_libzmq_local.sh)	24m 28s
bookworm armv7 / test (run_install_common.sh)	14m 32s
bookworm armv7 / test (run_install_faststartup.sh)	10m 17s
bookworm armv7 / test (run_install_webapp_local.sh)	20m 51s
bookworm armv7 / test (run_install_webapp_download.sh)	13m 30s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 24s
bullseye armv7 / cleanup	1s
bookworm armv7 / cleanup	3s
	2h 57m 50s

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