Make bibliography font size small

trustworthy-ai.tex

@@ -13,6 +13,7 @@
     citecolor=black
 }
 
+\AtBeginBibliography{\small}
 \addbibresource{trustworthy-ai.bib}
 
 \begin{document}
@@ -607,6 +608,10 @@ trust in the system's inner workings and results.
 \section{Conclusion}
 \label{sec:conclusion}
 
+Trustworthy AI is becoming an increasingly researched field which has important
+implications for the future development of artificial intelligence systems and
+their function within our societies.
+
 \printbibliography
 
 \end{document}