chore: bump go.opentelemetry.io/otel/exporters/prometheus

Bumps the otel group in /docs/user/integration/sample-app with 1 update: [go.opentelemetry.io/otel/exporters/prometheus](https://github.com/open-telemetry/opentelemetry-go).


Updates `go.opentelemetry.io/otel/exporters/prometheus` from 0.55.0 to 0.56.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-go/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-go/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-go@exporters/prometheus/v0.55.0...exporters/prometheus/v0.56.0)

---
updated-dependencies:
- dependency-name: go.opentelemetry.io/otel/exporters/prometheus
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: otel
...

Signed-off-by: dependabot[bot] <[email protected]>

docs/user/integration/sample-app/go.mod

@@ -8,7 +8,7 @@ require (
 	go.opentelemetry.io/otel v1.34.0
 	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.34.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.34.0
-	go.opentelemetry.io/otel/exporters/prometheus v0.55.0
+	go.opentelemetry.io/otel/exporters/prometheus v0.56.0
 	go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.34.0
 	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.34.0
 	go.opentelemetry.io/otel/metric v1.34.0

docs/user/integration/sample-app/go.sum

@@ -51,8 +51,8 @@ go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.34.0 h1:OeNbIYk/2C15ckl7glB
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.34.0/go.mod h1:7Bept48yIeqxP2OZ9/AqIpYS94h2or0aB4FypJTc8ZM=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.34.0 h1:tgJ0uaNS4c98WRNUEx5U3aDlrDOI5Rs+1Vifcw4DJ8U=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.34.0/go.mod h1:U7HYyW0zt/a9x5J1Kjs+r1f/d4ZHnYFclhYY2+YbeoE=
-go.opentelemetry.io/otel/exporters/prometheus v0.55.0 h1:sSPw658Lk2NWAv74lkD3B/RSDb+xRFx46GjkrL3VUZo=
-go.opentelemetry.io/otel/exporters/prometheus v0.55.0/go.mod h1:nC00vyCmQixoeaxF6KNyP42II/RHa9UdruK02qBmHvI=
+go.opentelemetry.io/otel/exporters/prometheus v0.56.0 h1:GnCIi0QyG0yy2MrJLzVrIM7laaJstj//flf1zEJCG+E=
+go.opentelemetry.io/otel/exporters/prometheus v0.56.0/go.mod h1:JQcVZtbIIPM+7SWBB+T6FK+xunlyidwLp++fN0sUaOk=
 go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.34.0 h1:czJDQwFrMbOr9Kk+BPo1y8WZIIFIK58SA1kykuVeiOU=
 go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.34.0/go.mod h1:lT7bmsxOe58Tq+JIOkTQMCGXdu47oA+VJKLZHbaBKbs=
 go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.34.0 h1:jBpDk4HAUsrnVO1FsfCfCOTEc/MkInJmvfCHYLFiT80=