fix(deps): update github.com/thanos-io/objstore digest to 4e5fd42

| datasource | package                       | from                               | to                                 |
| ---------- | ----------------------------- | ---------------------------------- | ---------------------------------- |
| go         | github.com/thanos-io/objstore | v0.0.0-20220809103346-8ef1f215e2bf | v0.0.0-20250813080715-4e5fd4289b50 |


Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/prometheus/common v0.65.1-0.20250825082953-9deefbac4820
 	github.com/prometheus/prometheus v0.44.0
 	github.com/stretchr/testify v1.10.0
-	github.com/thanos-io/objstore v0.0.0-20220809103346-8ef1f215e2bf
+	github.com/thanos-io/objstore 4e5fd4289b50
 	github.com/twmb/franz-go v1.15.4
 	github.com/twmb/franz-go/pkg/kadm v1.10.0
 	gopkg.in/yaml.v3 v3.0.1