Update clap to 4.1.8

This requires bumping the MSRV to 1.64.

It also updates the `terminal_size` crate that is pulled in by `clap` to
reduce duplicate dependencies.

doc/long-help.txt

@@ -161,7 +161,7 @@ Options:
           Show acknowledgements.
 
   -h, --help
-          Print help information (use `-h` for a summary)
+          Print help (see a summary with '-h')
 
   -V, --version
-          Print version information
+          Print version