Add libyaml-devel for psych 5+ broken in ManageIQ#528

Note, build_rpms github action was still passing so why do we even need psych here?

Should something be failing the build or can we delete psych as a dependency?

This fixes the error below if we really need psych 5+:

```
Installing psych 5.2.3 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /root/.local/share/gem/ruby/gems/psych-5.2.3/ext/psych
/usr/bin/ruby -I/usr/share/rubygems extconf.rb
checking for pkg-config for yaml-0.1... not found
checking for yaml.h... no
yaml.h not found
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.
```

Dockerfile

@@ -31,6 +31,7 @@ RUN ARCH=$(uname -m) && \
       libcurl-devel \
       libpq-devel \
       librdkafka \
+      libyaml-devel \
       libssh2-devel \
       libxml2-devel \
       libxslt-devel \