Bump node from c01b572 to 1aa4d55 (#815)

Bumps node from `c01b572` to `1aa4d55`.

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:15.11.0-alpine@sha256:c01b5723b62c031744743b9641cad56b41b1d93fadee897443a5d7cca744bb5f
+FROM node:15.11.0-alpine@sha256:1aa4d551d84797a2df6261e4b6a78b849f6bd11b0dc94b7f2ddf0023fecd8261
 ARG NODE_ENV=production
 ENV NODE_ENV=${NODE_ENV}
 LABEL "repository"="https://github.com/toolmantim/release-drafter"