Disable fail-fast in GitHub Actions.

Change-Id: I66e0998c23c54725ff864814de07783ba134992e
Reviewed-on: https://code-review.googlesource.com/c/re2/+/57812
Reviewed-by: Paul Wankadia <junyer@google.com>
diff --git a/.github/workflows/ci-bazel.yml b/.github/workflows/ci-bazel.yml
index c64d5e5..cf4c77a 100644
--- a/.github/workflows/ci-bazel.yml
+++ b/.github/workflows/ci-bazel.yml
@@ -6,6 +6,7 @@
   build:
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
     steps:
diff --git a/.github/workflows/ci-cmake.yml b/.github/workflows/ci-cmake.yml
index a36e426..1a9d961 100644
--- a/.github/workflows/ci-cmake.yml
+++ b/.github/workflows/ci-cmake.yml
@@ -6,6 +6,7 @@
   build:
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
     steps:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e81dd36..109296b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,7 @@
   build:
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [macos-latest, ubuntu-latest]
     env:
@@ -18,6 +19,7 @@
   build-clang:
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         tag: [9, 10, 11]
     env:
@@ -37,6 +39,7 @@
     runs-on: ubuntu-latest
     container: gcc:${{ matrix.tag }}
     strategy:
+      fail-fast: false
       matrix:
         tag: [4, 5, 6, 7, 8, 9, 10]
     env: