chore(deps): update proget.inedo.com/productimages/inedo/proget docke…

…r tag to v23.0.28

| datasource | package                                     | from    | to      |
| ---------- | ------------------------------------------- | ------- | ------- |
| docker     | proget.inedo.com/productimages/inedo/proget | 23.0.27 | 23.0.28 |

linux/Dockerfile

@@ -1,4 +1,4 @@
-FROM proget.inedo.com/productimages/inedo/proget:23.0.27@sha256:2d8556674562b690adcc54171179622f8a4bce310df28497aff926d3d672a3a2
+FROM proget.inedo.com/productimages/inedo/proget:23.0.28@sha256:3d31cd83c724e476b29fe4ade427c32991afce806dfda9f2e87fdc7801b400cf
 
 LABEL maintainer="Michael Kriese <michael.kriese@visualon.de>" \
     name="proget" \