Bump distroless/static from d90359c to 28efbe9 in /docker (#1912)

Bumps distroless/static from `d90359c` to `28efbe9`.


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docker/controller.Dockerfile

@@ -1,4 +1,4 @@
-FROM gcr.io/distroless/static@sha256:d90359c7a3ad67b3c11ca44fd5f3f5208cbef546f2e692b0dc3410a869de46bf
+FROM gcr.io/distroless/static@sha256:28efbe90d0b2f2a3ee465cc5b44f3f2cf5533514cf4d51447a977a5dc8e526d0
 LABEL maintainer "Sealed Secrets <sealed-secrets.pdl@broadcom.com>"
 
 USER 1001

docker/kubeseal.Dockerfile

@@ -1,4 +1,4 @@
-FROM gcr.io/distroless/static@sha256:d90359c7a3ad67b3c11ca44fd5f3f5208cbef546f2e692b0dc3410a869de46bf
+FROM gcr.io/distroless/static@sha256:28efbe90d0b2f2a3ee465cc5b44f3f2cf5533514cf4d51447a977a5dc8e526d0
 LABEL maintainer "Sealed Secrets <sealed-secrets.pdl@broadcom.com>"
 
 USER 1001