Bump absl for parity with CompilerGym.

Author: ChrisCummins

tools/bzl/deps.bzl

@@ -138,11 +138,11 @@ def programl_deps():
 
   http_archive(
     name = "com_google_absl",
-    sha256 = "35f22ef5cb286f09954b7cc4c85b5a3f6221c9d4df6b8c4a1e9d399555b366ee",
-    strip_prefix = "abseil-cpp-997aaf3a28308eba1b9156aa35ab7bca9688e9f6",
+    sha256 = "20a968fab8432661b5c6f3f951cd299fe6d7677541c7dfd62407475a046c91aa",
+    strip_prefix = "abseil-cpp-ec33f404bb16564a9aea3044cd8504d6885165b0",
     urls = [
-        "https://storage.googleapis.com/grpc-bazel-mirror/github.com/abseil/abseil-cpp/archive/997aaf3a28308eba1b9156aa35ab7bca9688e9f6.tar.gz",
-        "https://github.com/abseil/abseil-cpp/archive/997aaf3a28308eba1b9156aa35ab7bca9688e9f6.tar.gz",
+        "https://storage.googleapis.com/grpc-bazel-mirror/github.com/abseil/abseil-cpp/archive/ec33f404bb16564a9aea3044cd8504d6885165b0.tar.gz",
+        "https://github.com/abseil/abseil-cpp/archive/ec33f404bb16564a9aea3044cd8504d6885165b0.tar.gz",
     ],
   )