chore: bump llama_api_server_version and gaia_nexus_version

Signed-off-by: Xin Liu <sam@secondstate.io>

Author: apepkuss

install.sh

@@ -10,8 +10,8 @@ cwd=$(pwd)
 
 repo_branch="feat-new-nexus"
 version="0.6.0"
-llama_api_server_version="0.25.1"
-gaia_nexus_version="0.2.0"
+llama_api_server_version="0.26.1"
+gaia_nexus_version="0.8.0"
 wasmedge_version="0.14.1"
 ggml_bn="b6097"
 vector_version="0.38.0"