Problem with MergeList /var/lib/apt/lists/adoptopenjdk.jfrog.io_adoptopenjdk_deb_dists_buster_main_binary-amd64_Packages.lz4

**Platform:**
Debian Buster

**Architecture:**
Amd64

Our docker-based CI build suddenly started failing today...
```
Hit:1 http://security.debian.org/debian-security buster/updates InRelease
Ign:2 https://adoptopenjdk.jfrog.io/adoptopenjdk/deb buster InRelease
Get:3 https://adoptopenjdk.jfrog.io/adoptopenjdk/deb buster Release [5285 B]
Hit:4 http://deb.debian.org/debian buster InRelease
Hit:5 http://deb.debian.org/debian buster-updates InRelease
Get:6 https://adoptopenjdk.jfrog.io/adoptopenjdk/deb buster Release.gpg [821 B]
0% [Working]Get:7 https://adoptopenjdk.jfrog.io/adoptopenjdk/deb buster/main amd64 Packages [5058 B]
Fetched 11.2 kB in 0s (23.2 kB/s)

Reading package lists... 0%
Reading package lists... Error!

E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/adoptopenjdk.jfrog.io_adoptopenjdk_deb_dists_buster_main_binary-amd64_Packages.lz4
E: The package lists or status file could not be parsed or opened.
Exited with code 100
```

It sounds simliar to Issue AdoptOpenJDK/openjdk-build#1179 .

Is there something we need to do differently? Please let me know if you need more info.

Thanks!