Add swap file adjustment for webapp build #197

Job	Run time
bookworm armv7 / build	3m 46s
bullseye armv7 / build	3m 50s
bookworm armv7 / test (run_install_common.sh)	12m 59s
bookworm armv7 / test (run_install_faststartup.sh)	9m 59s
bookworm armv7 / test (run_install_webapp_local.sh)	19m 49s
bookworm armv7 / test (run_install_webapp_download.sh)	12m 39s
bookworm armv7 / test (run_install_libzmq_local.sh)	24m 32s
bullseye armv7 / test (run_install_common.sh)	12m 55s
bullseye armv7 / test (run_install_faststartup.sh)	9m 55s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 28s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 14s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 54s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	2s
	2h 50m 4s

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