[github] Fix protobuf installation for presubmit checks

Change-Id: I95e6e68e0ce4d2051f3c267667aedef63207b6c2
Reviewed-on: https://chrome-internal-review.googlesource.com/c/v8/fuzzilli/+/9064377
Commit-Queue: Michael Achenbach <machenbach@google.com>
Auto-Submit: Matthias Liedtke <mliedtke@google.com>
Reviewed-by: Michael Achenbach <machenbach@google.com>

Author: Liedtke

.github/workflows/swift.yml

@@ -30,19 +30,19 @@ jobs:
         run: swift --version
       - uses: actions/checkout@v2
       - name: Build
-        run: swift build -c ${{ matrix.kind }} -v
+        run: swift build -c ${{ matrix.kind }}
       - name: Install protobuf
         # Install protoc so the presubmit can also validate the generated *.pb.swift files.
         if: ${{ matrix.os == 'ubuntu-latest' && matrix.kind == 'debug' }}
-        run: sudo apt install -y protobuf-compiler
+        run: sudo apt update && sudo apt install -y protobuf-compiler
       - name: Install Node.js dependencies for Compiler/Parser tests
         working-directory: ./Sources/Fuzzilli/Compiler/Parser
         run: npm install
       - name: Run presubmit checks
         if: ${{ matrix.os == 'ubuntu-latest' && matrix.kind == 'debug' }}
         run: python3 Tools/presubmit.py
       - name: Run tests with Node.js
-        run: swift test -c ${{ matrix.kind }} -v
+        run: swift test -c ${{ matrix.kind }}
       - name: Install jsvu
         run: npm install jsvu -g
       - name: Install d8