Bump nltk from 3.2.5 to 3.4.5 in /src

Bumps [nltk](http://nltk.org/) from 3.2.5 to 3.4.5.

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/requirements.txt

@@ -9,7 +9,7 @@ schedule
 python-dotenv
 pytz
 tqdm
-nltk==3.2.5
+nltk==3.4.5
 shapely
 haversine
 fuzzywuzzy