chore(deps): update golang:alpine docker digest to a76f153 (google#577)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| golang | stage | digest | `4bc6541` -> `a76f153` |

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Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:alpine@sha256:4bc6541af94a67d9dcabba9826c36e4e9497dacf4e8755ac503000b6ff75318f AS builder
+FROM golang:alpine@sha256:a76f153cff6a59112777c071b0cde1b6e4691ddc7f172be424228da1bfb7bbda AS builder
 
 WORKDIR /src
 COPY ./go.mod ./go.sum ./

action.dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:alpine@sha256:4bc6541af94a67d9dcabba9826c36e4e9497dacf4e8755ac503000b6ff75318f
+FROM golang:alpine@sha256:a76f153cff6a59112777c071b0cde1b6e4691ddc7f172be424228da1bfb7bbda
 
 RUN mkdir /src
 WORKDIR /src