chore(deps): update alpine docker tag to v3.20.0 (#23)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -22,7 +22,7 @@ COPY . .
 
 RUN RUSTFLAGS=-Clinker=musl-gcc cargo build --release --target=x86_64-unknown-linux-musl
 
-FROM alpine:3.19.1
+FROM alpine:3.20.0
 
 RUN addgroup -g 1000 myapp