feat: switch to rinja #746

Job	Run time
Build & test (stable, ubuntu-latest)	4m 8s
Build & test (stable, macos-latest)	2m 12s
Build & test (stable, windows-latest)	6m 43s
Build & test (nightly, ubuntu-latest)	4m 34s
Build & test (nightly, macos-latest)	3m 51s
Build & test (nightly, windows-latest)	9m 56s
Test with external dependencies	1m 19s
Clippy lint checks	32s
Machete dependencies checks	10s
Test coverage checks	4m 12s
Code formatting checks	18s
Build with each feature combination	2m 22s
Minimal dependency versions build	42s
Miri test	6m 23s
	47m 22s

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