deps(go): bump github.com/knadh/koanf from 1.4.5 to 1.5.0

Bumps [github.com/knadh/koanf](https://github.com/knadh/koanf) from 1.4.5 to 1.5.0.
- [Release notes](https://github.com/knadh/koanf/releases)
- [Commits](knadh/koanf@v1.4.5...v1.5.0)

---
updated-dependencies:
- dependency-name: github.com/knadh/koanf
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/fxamacker/cbor/v2 v2.4.0
 	github.com/gorilla/mux v1.8.0
 	github.com/gorilla/websocket v1.5.0
-	github.com/knadh/koanf v1.4.5
+	github.com/knadh/koanf v1.5.0
 	github.com/oasisprotocol/oasis-core/go v0.2202.1
 	github.com/oasisprotocol/oasis-sdk/client-sdk/go v0.2.1-0.20220621104653-a0da10b705b9
 	github.com/prometheus/client_golang v1.14.0

go.sum

@@ -333,8 +333,8 @@ github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4=
 github.com/klauspost/compress v1.15.10 h1:Ai8UzuomSCDw90e1qNMtb15msBXsNpH6gzkkENQNcJo=
-github.com/knadh/koanf v1.4.5 h1:yKWFswTrqFc0u7jBAoERUz30+N1b1yPXU01gAPr8IrY=
-github.com/knadh/koanf v1.4.5/go.mod h1:Hgyjp4y8v44hpZtPzs7JZfRAW5AhN7KfZcwv1RYggDs=
+github.com/knadh/koanf v1.5.0 h1:q2TSd/3Pyc/5yP9ldIrSdIz26MCcyNQzW0pEAugLPNs=
+github.com/knadh/koanf v1.5.0/go.mod h1:Hgyjp4y8v44hpZtPzs7JZfRAW5AhN7KfZcwv1RYggDs=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=