feat(upgrade): support `deno upgrade 1.46.0` (#25096)

This commit changes `deno upgrade` subcommand to accept
a positional argument that can be either a version, release channel
name or a git hash, making invocations of `deno upgrade` much
more concise:

```
# before
$ deno upgrade --version 1.46.0
# after 
$ deno upgrade 1.46.0
```

```
# before
$ deno upgrade --canary
# after
$ deno upgrade canary
```

```
# specific canary version before
$ deno upgrade --canary --version f042c39180c1b345de8e7b5f0dfae5d0a49b161f
# after
$ deno upgrade f042c39180c1b345de8e7b5f0dfae5d0a49b161f
```

Old flags are still supported, but hidden from the help output.

0 files changed, 0 insertions, 0 deletions