Updated dependencies for example [skip ci]

Author: ankane

examples/candle/Cargo.toml

@@ -5,11 +5,11 @@ edition = "2021"
 publish = false
 
 [dependencies]
-candle-core = "0.7"
-candle-nn = "0.7"
-candle-transformers = "0.7"
-hf-hub = "0.3"
+candle-core = "0.8"
+candle-nn = "0.8"
+candle-transformers = "0.8"
+hf-hub = "0.4"
 pgvector = { path = "../..", features = ["postgres"] }
 postgres = "0.19"
 serde_json = "1"
-tokenizers = "0.20"
+tokenizers = "0.21"