build(deps): bump github.com/ethereum/go-ethereum in /proxyd (ethereum-optimism#10413)

Bumps [github.com/ethereum/go-ethereum](https://github.com/ethereum/go-ethereum) from 1.13.14 to 1.13.15.
- [Release notes](https://github.com/ethereum/go-ethereum/releases)
- [Commits](ethereum/go-ethereum@v1.13.14...v1.13.15)

---
updated-dependencies:
- dependency-name: github.com/ethereum/go-ethereum
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

proxyd/go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/BurntSushi/toml v1.3.2
 	github.com/alicebob/miniredis v2.5.0+incompatible
 	github.com/emirpasic/gods v1.18.1
-	github.com/ethereum/go-ethereum v1.13.14
+	github.com/ethereum/go-ethereum v1.13.15
 	github.com/go-redsync/redsync/v4 v4.10.0
 	github.com/golang/snappy v0.0.5-0.20220116011046-fa5810519dcb
 	github.com/gorilla/mux v1.8.0

proxyd/go.sum

@@ -62,8 +62,8 @@ github.com/emirpasic/gods v1.18.1 h1:FXtiHYKDGKCW2KzwZKx0iC0PQmdlorYgdFG9jPXJ1Bc
 github.com/emirpasic/gods v1.18.1/go.mod h1:8tpGGwCnJ5H4r6BWwaV6OrWmMoPhUl5jm/FMNAnJvWQ=
 github.com/ethereum/c-kzg-4844 v0.4.0 h1:3MS1s4JtA868KpJxroZoepdV0ZKBp3u/O5HcZ7R3nlY=
 github.com/ethereum/c-kzg-4844 v0.4.0/go.mod h1:VewdlzQmpT5QSrVhbBuGoCdFJkpaJlO1aQputP83wc0=
-github.com/ethereum/go-ethereum v1.13.14 h1:EwiY3FZP94derMCIam1iW4HFVrSgIcpsu0HwTQtm6CQ=
-github.com/ethereum/go-ethereum v1.13.14/go.mod h1:TN8ZiHrdJwSe8Cb6x+p0hs5CxhJZPbqB7hHkaUXcmIU=
+github.com/ethereum/go-ethereum v1.13.15 h1:U7sSGYGo4SPjP6iNIifNoyIAiNjrmQkz6EwQG+/EZWo=
+github.com/ethereum/go-ethereum v1.13.15/go.mod h1:TN8ZiHrdJwSe8Cb6x+p0hs5CxhJZPbqB7hHkaUXcmIU=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=