Update Dockerfile - Lets try rollback to lts-alpine (cardano-foundati…

…on#1342)

Lets try rollback to lts-alpine, alpine 3.18 will be end of life in 6 months.

Co-authored-by: Robert Phair <rphair@cosd.com>

.github/actions/yarn-build/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:lts-alpine3.18
+FROM node:lts-alpine
 
 RUN apk add --no-cache git
 RUN npm i -g --force yarn