Current GHA bootstraps fail for some arches with the incompatibility between libfreetype-dev and libfreetype6-dev:

```
I: Configuring libc-bin...
I: Configuring ca-certificates...
W: Failure while configuring base packages. This will be re-attempted up to five times.
W: See /home/runner/work/jdk/jdk/sysroot/debootstrap/debootstrap.log for details (possibly the package libfreetype6-dev:riscv64 is at fault)
```

If you reproduce it locally, then dpkg would say it fails with version conflict between libfreetype6-dev and libfreetype-dev:

```
dpkg: error processing package libfreetype6-dev:riscv64 (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 libfreetype6-dev:riscv64
dpkg: dependency problems prevent configuration of libfreetype6-dev:riscv64:
 libfreetype6-dev:riscv64 depends on libfreetype-dev (= 2.13.0+dfsg-1); however:
  Version of libfreetype-dev:riscv64 on system is 2.13.1+dfsg-1.
```

In both sid, bullseye and jammy, libfreetype6-dev is a transitional package:
  https://packages.debian.org/bullseye/libfreetype6-dev
  https://packages.debian.org/sid/libfreetype6-dev
  https://packages.ubuntu.com/jammy/libfreetype6-dev

There is therefore no reason to ask for libfreetype6-dev instead of libfreetype-dev directly.