Bump alpine from 82d1e9d to 7144f7b in /tekton/images/skopeo

Bumps alpine from `82d1e9d` to `7144f7b`.

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

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

tekton/images/skopeo/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM alpine:3.18@sha256:82d1e9d7ed48a7523bdebc18cf6290bdb97b82302a8a9c27d4fe885949ea94d1
+FROM alpine:3.18@sha256:7144f7bab3d4c2648d7e59409f15ec52a18006a128c733fcff20d3a4a54ba44a
 LABEL maintainer "Tekton Authors <tekton-dev@googlegroups.com>"
 
 RUN apk add --no-cache jq skopeo