SNOW-685438: Sign Nuget artifacts before release (#1001)

deploy.bat

@@ -17,4 +17,12 @@ dotnet build Snowflake.Data\Snowflake.Data.csproj -c Release --force -v n /p:Sig
 
 dotnet pack Snowflake.Data\Snowflake.Data.csproj -c Release --force -v n --no-build  --output %ROOT_DIR%
 
+aws s3 cp s3://sfc-eng-jenkins/repository/net/sign-artifact.exe .
+@For /F Delims^= %%G In ('""certutil.exe" -HashFile "sign-artifact.exe" SHA512|"find.exe" /V ":""')Do @Set "SHA=%%G"
+if not %SHA%==94f0b4a78979ded42f7f8c8ce2534691f9f874888bcf7963876f5be881cf6d0ce00e6f8d3e656492249fcfcb890ad656745f2cf68f98e828eb02ded6189a87d4 (
+  echo "Failed to verify the sha for the signing script"
+  exit 1
+)
+sign-artifact.exe sign-artifact -o snowflakedb -r snowflake-connector-net -t v%VERSION%  -l 20 -v -u -f Snowflake.Data.%VERSION%.nupkg
+
 dotnet nuget push Snowflake.Data.%VERSION%.nupkg -k %API_KEY% -s https://api.nuget.org/v3/index.json