Update alpine Docker tag to v3.20.0 (#505)

* Update alpine Docker tag to v3.20.0

* Bump Graphviz

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Patrick Hoefler <patrick.hoefler@gmail.com>

Dockerfile.alpine

@@ -1,13 +1,13 @@
 ### Release image
-FROM alpine:3.19.1@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b
+FROM alpine:3.20.0@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd
 
 LABEL org.opencontainers.image.source="https://github.com/patrickhoefler/dockerfilegraph"
 
-# renovate: datasource=repology depName=alpine_3_19/font-dejavu versioning=loose
+# renovate: datasource=repology depName=alpine_3_20/font-dejavu versioning=loose
 ENV FONT_DEJAVU_VERSION="2.37-r5"
 
-# renovate: datasource=repology depName=alpine_3_19/graphviz versioning=loose
-ENV GRAPHVIZ_VERSION="9.0.0-r0"
+# renovate: datasource=repology depName=alpine_3_20/graphviz versioning=loose
+ENV GRAPHVIZ_VERSION="9.0.0-r1"
 
 RUN apk add --update --no-cache \
   font-dejavu="${FONT_DEJAVU_VERSION}" \