Only run add-to-project action on issues

PRs from forks are triggered from that fork which means that they don't
have access to the necessary token

.github/workflows/add-to-project.yml

@@ -0,0 +1,17 @@
+name: add-to-project
+
+on:
+  issues:
+    types:
+      - opened
+
+jobs:
+  add-to-project:
+    name: Add to project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/add-to-project@v0.5.0
+        with:
+          project-url: "https://github.com/orgs/R2Northstar/projects/3"
+          github-token: "${{ secrets.PROJECT_BOARD_TOKEN }}"
+          

.github/workflows/build.yml

@@ -68,7 +68,7 @@ jobs:
         uses: actions/checkout@v3
         with:
           repository: R2Northstar/NorthstarNavs
-          ref: 'v1'
+          ref: 'v2'
           path: northstar-navs
       - name: Navmeshes setup
         run: |