Update requirements.txt

Updated to support running `get_aclanthology.sh`

requirements.txt

@@ -1,3 +1,22 @@
-tqdm>=4.64.1
-requests>=2.28.1
-feedparser>=6.0.10
+certifi==2022.12.7
+charset-normalizer==3.0.1
+citeproc-py==0.6.0
+citeproc-py-styles==0.1.3
+feedparser==6.0.10
+idna==3.4
+langcodes==3.3.0
+language-data==1.1
+lxml==4.9.2
+marisa-trie==0.7.8
+python-slugify==7.0.0
+pytz==2022.7.1
+PyYAML==6.0
+requests==2.28.2
+sgmllib3k==1.0.0
+six==1.16.0
+stop-words==2018.7.23
+TexSoup==0.3.1
+text-unidecode==1.3
+tqdm==4.64.1
+unicode==2.9
+urllib3==1.26.14