build(deps): update swatinem/rust-cache action to v2.7.6 #391

Job	Run time
Rustfmt [Formatter]	9s
Test (stable, i686-unknown-linux-gnu)	53s
Test [Build only] (stable, x86_64-unknown-freebsd)	57s
Test (stable, x86_64-unknown-linux-gnu)	51s
Test [Build only] (stable, x86_64-unknown-netbsd)	1m 7s
Test (stable, x86_64-unknown-linux-musl)	1m 4s
Test [Build only] (stable, aarch64-unknown-linux-gnu)	1m 7s
Test (stable, i686-pc-windows-msvc)	2m 35s
Test [Build only] (stable, aarch64-unknown-linux-musl)	58s
Test (stable, x86_64-pc-windows-msvc)	2m 34s
Test [Build only] (stable, aarch64-pc-windows-msvc)	2m 24s
Test (stable, x86_64-apple-darwin)	53s
Test [Build only] (stable, aarch64-apple-darwin)	39s
Test (1.69.0, i686-unknown-linux-gnu)	57s
Test [Build only] (1.69.0, x86_64-unknown-freebsd)	1m 0s
Test (1.69.0, x86_64-unknown-linux-gnu)	51s
Test [Build only] (1.69.0, x86_64-unknown-netbsd)	1m 9s
Test (1.69.0, x86_64-unknown-linux-musl)	1m 8s
Test [Build only] (1.69.0, aarch64-unknown-linux-gnu)	58s
Test (1.69.0, i686-pc-windows-msvc)	1m 19s
Test [Build only] (1.69.0, aarch64-unknown-linux-musl)	1m 0s
Test (1.69.0, x86_64-pc-windows-msvc)	1m 3s
Test [Build only] (1.69.0, aarch64-pc-windows-msvc)	1m 13s
Test (1.69.0, x86_64-apple-darwin)	48s
Test [Build only] (1.69.0, aarch64-apple-darwin)	44s
	28m 21s

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