Bump github.com/spiffe/go-spiffe/v2 from 2.1.3 to 2.1.4

Bumps [github.com/spiffe/go-spiffe/v2](https://github.com/spiffe/go-spiffe) from 2.1.3 to 2.1.4.
- [Release notes](https://github.com/spiffe/go-spiffe/releases)
- [Changelog](https://github.com/spiffe/go-spiffe/blob/main/CHANGELOG.md)
- [Commits](spiffe/go-spiffe@v2.1.3...v2.1.4)

---
updated-dependencies:
- dependency-name: github.com/spiffe/go-spiffe/v2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -19,7 +19,7 @@ require (
 	github.com/opencontainers/image-spec v1.1.0-rc2
 	github.com/pkg/errors v0.9.1
 	github.com/sigstore/sigstore v1.6.0
-	github.com/spiffe/go-spiffe/v2 v2.1.3
+	github.com/spiffe/go-spiffe/v2 v2.1.4
 	github.com/spiffe/spire-api-sdk v1.6.1
 	github.com/tektoncd/plumbing v0.0.0-20220817140952-3da8ce01aeeb
 	go.opencensus.io v0.24.0