Fix logging on Windows

[AnnaShaleva]

Problem
Absolute logger paths are not supported by zap logger (uber-go/zap#621, uber-go/zap#624). As example, see the failing test:

2021-11-17T15:46:00.8922873Z === RUN   TestHandleLoggingParams/default
2021-11-17T15:46:00.8923506Z     server_test.go:53: 
2021-11-17T15:46:00.8923992Z         	Error Trace:	server_test.go:53
2021-11-17T15:46:00.8924596Z         	Error:      	Received unexpected error:
2021-11-17T15:46:00.8925814Z         	            	couldn't open sink "C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\TestHandleLoggingParams150626778\\001\\file.log": no sink found for scheme "c"
2021-11-17T15:46:00.8927627Z         	Test:       	TestHandleLoggingParams/default
2021-11-17T15:46:00.8928441Z === RUN   TestHandleLoggingParams/debug
2021-11-17T15:46:00.8929062Z     server_test.go:66: 
2021-11-17T15:46:00.8929637Z         	Error Trace:	server_test.go:66
2021-11-17T15:46:00.8930234Z         	Error:      	Received unexpected error:
2021-11-17T15:46:00.8931425Z         	            	couldn't open sink "C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\TestHandleLoggingParams150626778\\001\\file.log": no sink found for scheme "c"
2021-11-17T15:46:00.8932684Z         	Test:       	TestHandleLoggingParams/debug
2021-11-17T15:46:00.8933483Z --- FAIL: TestHandleLoggingParams (0.00s)
2021-11-17T15:46:00.8934287Z     --- FAIL: TestHandleLoggingParams/default (0.00s)
2021-11-17T15:46:00.8935271Z     --- FAIL: TestHandleLoggingParams/debug (0.00s)