chore(deps): Bump alpine from 3.20 to 3.21 (#161)

Bumps alpine from 3.20 to 3.21.


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Signed-off-by: dependabot[bot] <[email protected]>
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Author: dependabot[bot]

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.20
+FROM alpine:3.21
 
 ARG BUILD_DATE
 ARG VERSION