fix(deps): update rust crate base64 to 0.22

Author: renovate[bot]

examples/substreams-powered-subgraph/Cargo.toml

@@ -13,7 +13,7 @@ substreams-ethereum = "0.9"
 substreams-entity-change = "1.3"
 prost = "0.11"
 prost-types = "0.11"
-base64 = "0.13"
+base64 = "0.22"
 
 [profile.release]
 lto = true