fix(deps): update golang.org/x/exp digest to 7f521ea (#775)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| golang.org/x/exp | require | digest | `2478ac8` -> `7f521ea` |

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go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/sigstore/sigstore-go v0.2.0
 	github.com/slsa-framework/slsa-github-generator v1.9.0
 	github.com/spf13/cobra v1.8.0
-	golang.org/x/mod v0.16.0
+	golang.org/x/mod v0.18.0
 	sigs.k8s.io/release-utils v0.7.7
 )
 
@@ -108,7 +108,7 @@ require (
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	golang.org/x/crypto v0.22.0 // indirect
-	golang.org/x/exp v0.0.0-20231108232855-2478ac86f678
+	golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8
 	golang.org/x/net v0.23.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
 	golang.org/x/sys v0.20.0 // indirect