Hello,

Description of problem:
Your package (knot-resolver) Fails To Install in CentOS 8-stream from EPEL 8.

$ dnf update
Last metadata expiration check: 0:03:47 ago on Sat 04 Sep 2021 11:18:03 AM UTC.
Error:
 Problem: cannot install the best update candidate for package knot-resolver-5.4.0-1.el8.x86_64
  - nothing provides libknot.so.11()(64bit) needed by knot-resolver-5.4.1-1.el8.x86_64
  - nothing provides libzscanner.so.3()(64bit) needed by knot-resolver-5.4.1-1.el8.x86_64
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

$ dnf repoquery --provides knot-libs
Last metadata expiration check: 0:00:43 ago on Sat 04 Sep 2021 11:34:26 AM UTC.
knot-libs = 3.1.1-1.el8
knot-libs(x86-64) = 3.1.1-1.el8
libdnssec.so.8()(64bit)
libknot.so.12()(64bit)
libzscanner.so.4()(64bit)

$ dnf repoquery --requires knot-resolver
Last metadata expiration check: 0:01:06 ago on Sat 04 Sep 2021 11:34:26 AM UTC.
/bin/sh
libc.so.6(GLIBC_2.28)(64bit)
libcap-ng.so.0()(64bit)
libdl.so.2()(64bit)
libdl.so.2(GLIBC_2.2.5)(64bit)
libdnssec.so.8()(64bit)
libedit.so.0()(64bit)
libgcc_s.so.1()(64bit)
libgcc_s.so.1(GCC_3.0)(64bit)
libgcc_s.so.1(GCC_3.3.1)(64bit)
libgnutls.so.30()(64bit)
libgnutls.so.30(GNUTLS_3_4)(64bit)
libknot.so.11()(64bit)
liblmdb.so.0.0.0()(64bit)
libluajit-5.1.so.2()(64bit)
libnghttp2.so.14()(64bit)
libstdc++.so.6()(64bit)
libstdc++.so.6(CXXABI_1.3)(64bit)
libstdc++.so.6(CXXABI_1.3.8)(64bit)
libstdc++.so.6(CXXABI_1.3.9)(64bit)
libstdc++.so.6(GLIBCXX_3.4)(64bit)
libsystemd.so.0()(64bit)
libsystemd.so.0(LIBSYSTEMD_209)(64bit)
libuv.so.1()(64bit)
libzscanner.so.3()(64bit)
lua5.1-basexx
lua5.1-cqueues
lua5.1-http
rtld(GNU_HASH)
shadow-utils
systemd

Version-Release number of selected component (if applicable):
* knot-resolver-5.4.1-1.el8.x86_64
* knot-libs-3.1.1-1.el8.x86_64

How reproducible:
* Fresh CentOS 8-stream installation
* dnf install epel-release
* dnf install knot-resolver

Actual results:
Last metadata expiration check: 0:03:47 ago on Sat 04 Sep 2021 11:18:03 AM UTC.
Error:
 Problem: cannot install the best update candidate for package knot-resolver-5.4.0-1.el8.x86_64
  - nothing provides libknot.so.11()(64bit) needed by knot-resolver-5.4.1-1.el8.x86_64
  - nothing provides libzscanner.so.3()(64bit) needed by knot-resolver-5.4.1-1.el8.x86_64
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

Expected results:
It should be able to update / install knot-resolver 5.4.1

Thank you,
tr