skopeo: update to 1.21.0.

Author: ar-jan

srcpkgs/skopeo/template

@@ -1,7 +1,7 @@
 # Template file for 'skopeo'
 pkgname=skopeo
-version=1.16.0
-revision=3
+version=1.21.0
+revision=1
 build_style=go
 build_helper=qemu
 go_import_path="github.com/containers/skopeo"
@@ -16,7 +16,7 @@ license="Apache-2.0"
 homepage="https://github.com/containers/skopeo"
 changelog="https://github.com/containers/skopeo/releases"
 distfiles="https://github.com/containers/skopeo/archive/refs/tags/v${version}.tar.gz"
-checksum=fed91fd067605460ef33431163227471b1e85c8768203fc393345d6ffd645448
+checksum=f76eeddf697a3cc7a872e3077ab4d0fdbebe9f3c6171462e3e9feb84368b3fac
 make_dirs="/var/lib/atomic/sigstore 0755 root root"
 
 post_build() {