upgrade transformers dependency (security)

Author: thecharlieblake

requirements-dev.txt

@@ -9,6 +9,6 @@ pytest==7.3.1
 pytest-cov==4.0.0
 sphinx==6.2.1
 sphinx-rtd-theme==1.2.0
-transformers==4.36.0
+transformers==4.38.0
 types-Pygments==2.15.0.0
 types-tabulate==0.9.0.2