Legg til manglande @main i build action referanse.

Author: josstn

.github/workflows/build.yaml

@@ -37,7 +37,7 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@v4
-      - uses: navikt/sif-gha-workflows/.github/actions/maven/generate-openapi
+      - uses: navikt/sif-gha-workflows/.github/actions/maven/generate-openapi@main
         id: generate-openapi
         with:
           readerToken: ${{ secrets.READER_TOKEN }}