Fix PF CI process

[adamewozniak]

There are issues in the price feeder CI process. In unit-test:

3:36AM WRN Coin gecko found 0 providers for USDT
    config_test.go:766: 
        	Error Trace:	/home/runner/work/price-feeder/price-feeder/config/config_test.go:766
        	Error:      	An error is expected but got nil.
        	Test:       	TestCheckProviderMins_Invalid
--- FAIL: TestCheckProviderMins_Invalid (0.31s)
=== RUN   TestProviderWithAPIKey_Valid
3:36AM ERR failed to start currency provider tracker error="json: cannot unmarshal object into Go value of type []config.coinList"

In test-integration:

3:38AM WRN failed to get candle prices for STINJINJ provider=astroport
    provider_test.go:100: 
        	Error Trace:	/home/runner/work/price-feeder/price-feeder/tests/integration/provider_test.go:100
        	            				/home/runner/work/price-feeder/price-feeder/tests/integration/provider_test.go:66
        	            				/opt/hostedtoolcache/go/1.19.13/x64/src/runtime/asm_amd64.s:1594
        	Error:      	no candle prices
        	Test:       	TestServiceTestSuite/TestWebsocketProviders
        	Messages:   	provider astroport pair STINJINJ
--- FAIL: TestServiceTestSuite (62.47s)
    --- FAIL: TestServiceTestSuite/TestWebsocketProviders (62.47s)