Bump Swatinem/rust-cache from 2.7.3 to 2.7.5 #167

Job	Run time
TS tests	57s
TS tests	57s
Wasm stuff	1m 3s
Wasm stuff	1m 1s
Build and Test (ubuntu-latest, stable)	35s
Build and Test (ubuntu-latest, stable)	35s
Lints and Docs	23s
Lints and Docs	23s
Build and Test (ubuntu-latest, nightly)	31s
Build and Test (ubuntu-latest, nightly)	31s
Build and Test (macOS-latest, stable)	34s
Build and Test (macOS-latest, stable)	34s
Build and Test (macOS-latest, nightly)	52s
Build and Test (macOS-latest, nightly)	52s
Build and Test (windows-latest, stable)	1m 8s
Build and Test (windows-latest, stable)	1m 8s
Build and Test (windows-latest, nightly)	58s
Build and Test (windows-latest, nightly)	58s
	14m 0s

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