CI: risc64 -> riscv64

Prepare release 0.1.10

Prepare release 0.1.9

Prepare release 0.1.8

Prepare release 0.1.7

Fix creating a fully static binary

Using `NIX_LDFLAGS` to pass in the `-static` flag does not work, since the CC
wrapper decides early on (using the `checkLinkType` helper funtion) if the link
type is dynamic or not, only looking at the passed arguments (and response
files). Depending on this, it will then pass the `-dynamic-linker` flag to the
linker which we need to avoid.

We need to pass `-static` directly when invoking the CC wrapper. Fortunately,
the `NIX_CFLAGS_LINK` variable already contains this flag (on Linux).

Prepare release 0.1.5

Prepare release 0.1.4

Prepare release 0.1.3

Prepare release 0.1.2