Updated requirements

requirements.txt

-import_ipynb
+import_ipynb==0.1.3
 elasticsearch==6.3.1
-pandas
-selenium
-pyshp
+pandas==1.1.5
+selenium==3.141.0
+pyshp==2.1.0
 googletrans==3.1.0a0
-openpyxl
-git+https://pip:Mms8NauywwsUFU3wzC8T@git.wur.nl/overb015/feed-conversion.git@master
+openpyxl==3.0.7
+