Bumping golang v1.22

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21 AS builder
+FROM golang:1.22 AS builder
 WORKDIR /app
 COPY . /app
 RUN CGO_ENABLED=0 go build -v -o telegram-notify .

go.mod

@@ -1,6 +1,6 @@
 module github.com/chapvic/telegram-notify
 
-go 1.21
+go 1.22
 
 require (
 	github.com/JohannesKaufmann/html-to-markdown v1.6.0