build(deps): bump github.com/spf13/viper from 1.18.2 to 1.19.0 #200

Job	Run time
YAML Lint	20s
Generate Code	1m 12s
Rego PR checks	1m 27s
Go Lint	1m 41s
Check Generated	23s
Go Build (linux amd64)	2m 29s
Go Test (linux)	4m 32s
Go Build (linux arm64)	1m 59s
Go compat build/test (ubuntu-22.04, 1.20)	4m 7s
Go Test (darwin)	4m 22s
Go Race Detector	6m 9s
Go Build (linux arm64GO_TAGS="-tags=opa_no_oci")	2m 12s
Go compat build/test (macos-14, 1.20)	4m 39s
Go Build (windows amd64)	2m 31s
Go Build (darwin amd64)	1m 44s
WASM	13s
Go Build (darwin arm64)	57s
docker image smoke test	28s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64, amd64)	11s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64_static, amd64, disabled)	26s
smoke-test-binaries (darwin, macos-13, opa_darwin_amd64, amd64)	36s
smoke-test-binaries (darwin, macos-14, opa_darwin_arm64_static, arm64, disabled)	13s
smoke-test-binaries (windows, windows-latest, opa_windows_amd64.exe, amd64)	35s
	43m 26s

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