Fixes: compiler segfault on ARM64

The CI crashes with:
```
21 370.9 [ 72%] Building C object tests/CMakeFiles/messaging_tests.dir/messaging_tests.c.o
21 371.1 cc: internal compiler error: Segmentation fault signal terminated program cc1
21 371.1 Please submit a full bug report, with preprocessed source (by using -freport-bug).
21 371.1 See <file:///usr/share/doc/gcc-12/README.Bugs> for instructions.
```

when trying to build c-green 1.6.2.

.github/install-openvas-dependencies.sh

@@ -35,7 +35,7 @@ apt-get update && apt-get install --no-install-recommends --no-install-suggests
     libhiredis-dev \
     && rm -rf /var/lib/apt/lists/*
 
-curl -L -o cgreen.tar.gz https://github.com/cgreen-devs/cgreen/archive/refs/tags/1.6.2.tar.gz -k
-tar -xzf cgreen.tar.gz && cd cgreen-1.6.2
+curl -L -o cgreen.tar.gz https://github.com/cgreen-devs/cgreen/archive/refs/tags/1.6.3.tar.gz -k
+tar -xzf cgreen.tar.gz && cd cgreen-1.6.3
 make install
 ldconfig