Bump Swatinem/rust-cache from 2.7.1 to 2.7.3 #161

Job	Run time
windows (libertem_dectris)	6m 8s
linux (libertem_dectris)	1m 26s
linux-test (libertem_dectris)	1m 10s
linux-test (libertem_asi_tpx3)	48s
linux (libertem_asi_tpx3)	1m 22s
windows (libertem_asi_tpx3)	4m 10s
linux-test (ipc_test)	34s
macos (libertem_dectris, x86_64)	5m 35s
macos (libertem_dectris, aarch64)	2m 47s
windows-test (libertem_dectris)	4m 38s
macos (libertem_asi_tpx3, x86_64)	1m 8s
macos-test (libertem_dectris)	2m 12s
windows-test (libertem_asi_tpx3)	3m 45s
macos (libertem_asi_tpx3, aarch64)	1m 45s
macos-test (libertem_asi_tpx3)	2m 0s
windows-test (ipc_test)	4m 24s
Release	0s
	43m 52s

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