ci: avoid duplicate builds for another two CI builds

.github/workflows/ci-contracts-upload-binaries.yml

@@ -22,6 +22,8 @@ jobs:
         platform: [ubuntu-20.04]
 
     runs-on: ${{ matrix.platform }}
+    # a push event from the origin repo, or a PR from external repo
+    if: ${{ github.event_name == 'push' || github.event.pull_request.head.repo.full_name != 'nymtech/nym' }}
     steps:
       - uses: actions/checkout@v3
 

.github/workflows/ci-nym-wallet-rust.yml

@@ -19,6 +19,8 @@ jobs:
     runs-on: [ self-hosted, custom-linux ]
     # env:
     #   RUSTC_WRAPPER: /home/ubuntu/.cargo/bin/sccache
+    # a push event from the origin repo, or a PR from external repo
+    if: ${{ github.event_name == 'push' || github.event.pull_request.head.repo.full_name != 'nymtech/nym' }}
     steps:
       - name: Install Dependencies (Linux)
         run: sudo apt-get update && sudo apt-get -y install libwebkit2gtk-4.0-dev build-essential curl wget libssl-dev libgtk-3-dev squashfs-tools