Bump github.com/cenkalti/backoff/v4

Bumps [github.com/cenkalti/backoff/v4](https://github.com/cenkalti/backoff) from 4.2.1 to 4.3.0.
- [Commits](cenkalti/backoff@v4.2.1...v4.3.0)

---
updated-dependencies:
- dependency-name: github.com/cenkalti/backoff/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

exporters/otlp/otlpmetric/otlpmetricgrpc/go.mod

@@ -5,7 +5,7 @@ go 1.20
 retract v0.32.2 // Contains unresolvable dependencies.
 
 require (
-	github.com/cenkalti/backoff/v4 v4.2.1
+	github.com/cenkalti/backoff/v4 v4.3.0
 	github.com/google/go-cmp v0.6.0
 	github.com/stretchr/testify v1.8.4
 	go.opentelemetry.io/otel v1.23.1

exporters/otlp/otlpmetric/otlpmetricgrpc/go.sum

@@ -1,5 +1,5 @@
-github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
-github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
+github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
+github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=