chore(pkg): use v3.5.0 of yarn

.gitignore

@@ -613,3 +613,5 @@ $RECYCLE.BIN/
 
 lib
 junit.xml
+
+.yarn/

.gitlab-ci.yml

-image: node:18.14.0
+image: node:18.15.0
 
 stages:
   - test
@@ -32,10 +32,11 @@ proxy:
   - if [[ "$behind_proxy" == true ]]; then
   -   npm config set proxy $http_proxy
   -   npm config set https-proxy $https_proxy
+  -   yarn config set -H httpProxy $http_proxy
+  -   yarn config set -H httpsProxy $https_proxy
   - fi
   # install deps
-  - yarn install --frozen-lockfile --no-progress --cache-folder .yarn
-
+  - yarn install --immutable
 
 # === Job: Unit Tests ===
 # Description: this job runs the unit tests

.yarnrc.yml

+nodeLinker: node-modules

package.json

@@ -50,5 +50,6 @@
     "!**/*.json",
     "LICENSE",
     "README.md"
-  ]
+  ],
+  "packageManager": "yarn@3.5.0"
 }