Exclude failing Abseil tests from CI

.github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 18d3339..e5df2b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,9 @@
       matrix:
         lib:
           - "@com_google_googletest//..."
-          - "@com_google_absl//..."
+          # Some tests are excluded because of
+          # https://github.com/abseil/abseil-cpp/issues/1378
+          - "-- @com_google_absl//... -@com_google_absl//absl/time:time_test -@com_google_absl//absl/time/internal/cctz:time_zone_format_test -@com_google_absl//absl/time/internal/cctz:time_zone_lookup_test -@com_google_absl//absl/time:time_benchmark"
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps: