ci: continue when one job fails in matrix

GitHub Actions was formerly cancelling the matrix on a single job
failure.

Author: lread

.github/workflows/native-image-test.yml

@@ -6,6 +6,7 @@ jobs:
   build:
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [ windows-latest, ubuntu-latest, macos-latest ]
         graal-java: [ 11 ]

.github/workflows/unit-test.yml

@@ -6,6 +6,7 @@ jobs:
   build:
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [ windows-latest, ubuntu-latest, macos-latest ]
         java: [ '8', '11', '17' ]