Test

Remove references to Simfony #129

Job	Run time
Check flake	23s
Build - integration tests	1m 26s
Test - MSRV toolchain	1m 20s
Test - stable toolchain (ubuntu-latest)	46s
Test - stable toolchain (windows-latest)	1m 47s
Test - stable toolchain (macos-latest)	1m 0s
Test - fuzzer	0s
Build - WASM	0s
	6m 42s

Provide feedback