chore(deps): bump github.com/spiffe/spire-api-sdk from 1.9.0 to 1.9.1

Bumps [github.com/spiffe/spire-api-sdk](https://github.com/spiffe/spire-api-sdk) from 1.9.0 to 1.9.1.
- [Commits](spiffe/spire-api-sdk@v1.9.0...v1.9.1)

---
updated-dependencies:
- dependency-name: github.com/spiffe/spire-api-sdk
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -20,7 +20,7 @@ require (
  github.com/pkg/errors v0.9.1
  github.com/sigstore/sigstore v1.8.1
  github.com/spiffe/go-spiffe/v2 v2.1.7
- github.com/spiffe/spire-api-sdk v1.9.0
+ github.com/spiffe/spire-api-sdk v1.9.1
  github.com/tektoncd/plumbing v0.0.0-20220817140952-3da8ce01aeeb
  go.opencensus.io v0.24.0
  go.uber.org/zap v1.27.0