Merge pull request #432 from plotters-rs/dependabot/cargo/gif-0.12.0

Update gif requirement from 0.11.2 to 0.12.0

Author: AaronErhardt

plotters-bitmap/Cargo.toml

@@ -12,7 +12,7 @@ readme = "README.md"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-gif = { version = "0.11.2", optional = true }
+gif = { version = "0.12.0", optional = true }
 
 [dependencies.plotters-backend]
 path = "../plotters-backend"