build: 💚 fix bmt-lite version

requirements.txt

@@ -5,12 +5,12 @@ biothings[web_extra]==0.12.5
 jsonschema>=4.4.0
 
 # web handling
-pycurl==7.45.2       # to use curl_httpclient in tornado
+pycurl==7.45.3       # to use curl_httpclient in tornado
 #chardet==3.0.4
 aiocron==1.8
 
 # gitdb version specified because gitdb.utils.compat not available in newest version
-gitdb==4.0.9
+gitdb==4.0.11
 
 # local issuer certificate
 certifi
@@ -23,6 +23,6 @@ filelock
 boto3
 
 # Biolink Model Toolkit, used in /api/metakg endpoint
-'bmt-lite-v3.1.0==2.2.2; python_version < "3.9.0"'
-'bmt-lite-v3.6.0==2.3.0; python_version >= "3.9.0"'
+bmt-lite-v3.1.0==2.2.2; python_version >= "3.7.0" and python_version < "3.9.0"
+bmt-lite-v3.6.0==2.3.0; python_version >= "3.9.0"
 networkx==3.1.0