chore(deps): update prometheus-fastapi-instrumentator requirement

Updates the requirements on [prometheus-fastapi-instrumentator](https://github.com/trallnag/prometheus-fastapi-instrumentator) to permit the latest version.
- [Release notes](https://github.com/trallnag/prometheus-fastapi-instrumentator/releases)
- [Changelog](https://github.com/trallnag/prometheus-fastapi-instrumentator/blob/master/CHANGELOG.md)
- [Commits](trallnag/prometheus-fastapi-instrumentator@v6.1.0...v7.1.0)

---
updated-dependencies:
- dependency-name: prometheus-fastapi-instrumentator
  dependency-version: 7.1.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -103,7 +103,7 @@ dependencies = [
     "plaid-python>=14.0.0,<40",
     # Metrics & Observability
     "prometheus-client>=0.19.0", # Prometheus Python client
-    "prometheus-fastapi-instrumentator>=6.1.0", # FastAPI Prometheus integration
+    "prometheus-fastapi-instrumentator>=7.1.0", # FastAPI Prometheus integration
     "psutil>=5.9.0", # System metrics (CPU, memory, disk)
     "alpaca-py>=0.15.0",
     "web3>=7.14.0",