main/krb5: security upgrade to 1.17.2

See #12121

main/krb5/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=krb5
-pkgver=1.17
+pkgver=1.17.2
 pkgrel=0
 pkgdesc="The Kerberos network authentication system"
 url="https://web.mit.edu/kerberos/www/"
@@ -19,7 +19,7 @@ case $pkgver in
 *.*.*) _maj_min=${pkgver%.*};;
 esac
 
-source="https://web.mit.edu/kerberos/dist/krb5/${_maj_min}/krb5-$pkgver.tar.gz
+source="https://web.mit.edu/kerberos/dist/krb5/$_maj_min/krb5-$pkgver.tar.gz
 	mit-krb5_krb5-config_LDFLAGS.patch
 
 	krb5kadmind.initd
@@ -28,6 +28,8 @@ source="https://web.mit.edu/kerberos/dist/krb5/${_maj_min}/krb5-$pkgver.tar.gz
 	"
 
 # secfixes:
+#   1.17.2-r0:
+#     - CVE-2020-28196
 #   1.15.4-r0:
 #     - CVE-2018-20217
 #   1.15.3-r0:
@@ -105,7 +107,8 @@ libs() {
 	mkdir -p "$subpkgdir"/usr/
 	mv "$pkgdir"/usr/lib "$subpkgdir"/usr/
 }
-sha512sums="7462a578b936bd17f155a362dbb5d388e157a80a096549028be6c55400b11361c7f8a28e424fd5674801873651df4e694d536cae66728b7ae5e840e532358c52  krb5-1.17.tar.gz
+
+sha512sums="73e8d1f1d94b49fc678c88029eab525dab941d5759f69b13bd66fc77a198603502797526ff89a00f7f7e39e0777b0f4b4585b3279c4def45443f05b752ac476a  krb5-1.17.2.tar.gz
 5a3782ff17b383f8cd0415fd13538ab56afd788130d6ad640e9f2682b7deaae7f25713ce358058ed771091040dccf62a3bc87e6fd473d505ec189a95debcc801  mit-krb5_krb5-config_LDFLAGS.patch
 43b9885b7eb8d0d60920def688de482f2b1701288f9acb1bb21dc76b2395428ff304961959eb04ba5eafd0412bae35668d6d2c8223424b9337bc051eadf51682  krb5kadmind.initd
 ede15f15bbbc9d0227235067abe15245bb9713aea260d397379c63275ce74aea0db6c91c15d599e40c6e89612d76f3a0f8fdd21cbafa3f30d426d4310d3e2cec  krb5kdc.initd