Bun 1.2 compatibility (#66)

* bumping setup-bun from v1 to v2

* bun 1.2 compatibility

---------

Co-authored-by: Olle Korkmaz Zillén <olle.korkmazzillen@avanza.se>

Author: ollecoffee

action.yml

@@ -45,6 +45,10 @@ runs:
             VERSION="latest"
             echo "PACKAGE_MANAGER=npm" >> $GITHUB_ENV
             echo "LOCKFILE=package-lock.json" >> $GITHUB_ENV
+        elif [ $(find "." -maxdepth 1 -name "bun.lock") ]; then
+            VERSION="latest"
+            echo "PACKAGE_MANAGER=bun" >> $GITHUB_ENV
+            echo "LOCKFILE=bun.lock" >> $GITHUB_ENV
         elif [ $(find "." -maxdepth 1 -name "bun.lockb") ]; then
             VERSION="latest"
             echo "PACKAGE_MANAGER=bun" >> $GITHUB_ENV