Consolidate the dependencies for the IsTerminal() API

The rest of the code has been using golang.org/x/* for the IsTerminal()
API for a long time, not github.com/mattn/go-isatty.  It seems better to
stick to packages from the golang.org domain, whenever possible, and one
less dependency is always a good thing.

The modules were not cleaned up with 'make vendor' because 'go mod tidy'
was running into:

go: error loading go 1.16 module graph:
  github.com/containers/image/v5@v5.23.1-0.20221015133641-1921a1993c67
  requires
      github.com/honeycombio/beeline-go@v1.9.0 requires
      github.com/mattn/go-sqlite3@v2.0.3+incompatible: reading
        github.com/mattn/go-sqlite3/go.mod at revision v2.0.3: unknown
        revision v2.0.3

If reproducibility with go 1.16 is not needed:
    go mod tidy -compat=1.17

Since go.mod already requires Go 1.17, the following commands were
manually run:
$ go mod tidy -compat=1.17
$ go mod vendor
$ go mod verify

Further modifications to go.sum were done manually based on the
complaints from postbuild.sh run by the CI.

[NO NEW TESTS NEEDED] as it's not a functional change.

Fixes: 85db895012 ("logging: new mode -l passthrough")

Signed-off-by: Debarshi Ray <rishi@fedoraproject.org>

vendor/github.com/mattn/go-isatty/isatty_solaris.go

@@ -1,21 +0,0 @@
-//go:build solaris && !appengine
-// +build solaris,!appengine
-
-package isatty
-
-import (
-	"golang.org/x/sys/unix"
-)
-
-// IsTerminal returns true if the given file descriptor is a terminal.
-// see: https://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libc/port/gen/isatty.c
-func IsTerminal(fd uintptr) bool {
-	_, err := unix.IoctlGetTermio(int(fd), unix.TCGETA)
-	return err == nil
-}
-
-// IsCygwinTerminal return true if the file descriptor is a cygwin or msys2
-// terminal. This is also always false on this environment.
-func IsCygwinTerminal(fd uintptr) bool {
-	return false
-}