Update rust (#249)

* Updated rust version

* Updated rust in workflow

* Updating rust version in docker file

* Updating postgresql

* Updated crates

* cargo update

* Updated readme

* Version bump

* Warning fix

Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: Build the application
-FROM rust:1.90 as builder
+FROM rust:1.94 as builder
 
 # Set the working directory inside the container
 WORKDIR /usr/src/app