Bump alpine in /tekton/images/skopeo in the all group

Bumps the all group in /tekton/images/skopeo with 1 update: alpine.


Updates `alpine` from `77726ef` to `b89d9c9`

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
...

Signed-off-by: dependabot[bot] <[email protected]>

tekton/images/skopeo/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM alpine:3.20@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd
+FROM alpine:3.20@sha256:0a4eaa0eecf5f8c050e5bba433f58c052be7587ee8af3e8b3910ef9ab5fbe9f5
 LABEL maintainer "Tekton Authors <[email protected]>"
 
 RUN apk add --no-cache jq skopeo