Updated GGMLs for latest llama.cpp May 12th quantisation methods.

h2ogptq-oasst1-512-30B.ggml.q4_0.bin

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 version https://git-lfs.github.com/spec/v1
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+oid sha256:897f2994101ed1577f93e7443698d25daacf50b1b7305c4abd2b6020e6ab71a5
 size 20333775232

h2ogptq-oasst1-512-30B.ggml.q4_1.bin

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28fb935c0894d3661874615dbaa38d652f2aa7d68f87ba1487050909aff6cb51
+size 24399792512