Bump alpine from 3.20.3 to 3.21.3

Bumps alpine from 3.20.3 to 3.21.3.

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

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

Dockerfile.e2e

@@ -1,4 +1,4 @@
-FROM alpine:3.20.3
+FROM alpine:3.21.3
 
 # hadolint ignore=DL3017
 RUN apk upgrade --no-cache busybox

Dockerfile.migrations_local

@@ -18,7 +18,7 @@ RUN rm -f bin/milmove && make bin/milmove
 # FINAL #
 #########
 
-FROM alpine:3.20.3
+FROM alpine:3.21.3
 
 # hadolint ignore=DL3017
 RUN apk upgrade --no-cache busybox

Dockerfile.reviewapp

@@ -46,7 +46,7 @@ RUN set -x \
   && make bin/generate-test-data
 
 # define migrations before client build since it doesn't need client
-FROM alpine:3.20.3 as migrate
+FROM alpine:3.21.3 as migrate
 
 COPY --from=server_builder /build/bin/rds-ca-2019-root.pem /bin/rds-ca-2019-root.pem
 COPY --from=server_builder /build/bin/milmove /bin/milmove

Dockerfile.tools

@@ -1,4 +1,4 @@
-FROM alpine:3.20.3
+FROM alpine:3.21.3
 
 # hadolint ignore=DL3017
 RUN apk upgrade --no-cache busybox

Dockerfile.tools_local

@@ -18,7 +18,7 @@ RUN rm -f bin/prime-api-client && make bin/prime-api-client
 # FINAL #
 #########
 
-FROM alpine:3.20.3
+FROM alpine:3.21.3
 
 # hadolint ignore=DL3017
 RUN apk upgrade --no-cache busybox