This action is to compute the SHA256 hash of specified files.
The hash function is based on [nektos/act](https://github.com/nektos/act/blob/ac5dd8feb876d37ae483376a137c57383577dace/pkg/exprparser/functions.go#L183). Thanks!
**NOTE:** This action is written in Go. Please setup the Go environment before running this action or use a runner with Go environment installed.