(maint) resolve spec test changes from updated module

With server version 14 https://github.com/puppetlabs/puppetlabs-postgresql/blob/411e7bce3f2d5256c315351144dc525b6c0afbbe/manifests/params.pp#L28
the default hash is scram, so the fixture needed to be updated. Additionally, the
`client_cert` validation parameter is now always `verify-full` because of the updated
postgres version.

spec/support/unit/shared/database.rb

@@ -227,7 +227,7 @@
     it { is_expected.to raise_error(error) }
   else
     let(:identity_map_key) { "#{with[:database_name]}-#{with[:database_username]}-map" }
-    let(:client_cert) { (with[:postgres_version].to_f >= 12.0) ? 'verify-full' : '1' }
+    let(:client_cert) { 'verify-full' }
 
     it { is_expected.to contain_puppetdb__database__postgresql_ssl_rules(name).with(with) }
 

spec/unit/classes/database/postgresql_spec.rb

@@ -94,7 +94,7 @@
           {
             read_database_username: params[:read_database_username],
             database_name:          params[:database_name],
-            password_hash:          'md588e898a4bade3fe1c9b96f650ec85900', # TODO: mock properly
+            password_hash:          'SCRAM-SHA-256$4096:cHVwcGV0ZGItcmVhZA==$qJ2Yyu4715ht/e8AFkvuzM8DdHyU2fTz9/slcH8r8j8=:VpRBz0fk+87tv1NlNHoR7Z2RyTVJJO42EtgQmKFlyPE=', # TODO: mock properly
             database_owner:         params[:database_username],
           }
         end