Bumping Abseil version to latest LTS (#10433)

* Bumping Abseil version to latest LTS

* Upgrade PHP build to latest docker image

* Deleting php 7.0 kokoro build now that it's not supported

* Putting old PHP test back

* Fix test cases that exceed PHP_INT_MAX

kokoro/linux/php_all/build.sh

@@ -8,16 +8,16 @@ set -ex
 # Change to repo base.
 cd $(dirname $0)/../../..
 
-docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-dbg-14a06550010c0649bf69b6c9b803c1ca609bbb6d "composer test_valgrind"
+docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-dbg-fd99596d4c4c9b78f984ee667a9b26b91a28eb8d "composer test_valgrind"
 
-docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:7.0.33-dbg-14a06550010c0649bf69b6c9b803c1ca609bbb6d "composer test && composer test_c"
-docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:7.3.28-dbg-14a06550010c0649bf69b6c9b803c1ca609bbb6d "composer test && composer test_c"
-docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:7.4.18-dbg-14a06550010c0649bf69b6c9b803c1ca609bbb6d "composer test && composer test_c"
-docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-dbg-14a06550010c0649bf69b6c9b803c1ca609bbb6d "composer test && composer test_c"
+docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:7.0.33-dbg-fd99596d4c4c9b78f984ee667a9b26b91a28eb8d "composer test && composer test_c"
+docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:7.3.28-dbg-fd99596d4c4c9b78f984ee667a9b26b91a28eb8d "composer test && composer test_c"
+docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:7.4.18-dbg-fd99596d4c4c9b78f984ee667a9b26b91a28eb8d "composer test && composer test_c"
+docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-dbg-fd99596d4c4c9b78f984ee667a9b26b91a28eb8d "composer test && composer test_c"
 
 # Run specialized memory leak & multirequest tests.
-docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-dbg-14a06550010c0649bf69b6c9b803c1ca609bbb6d "composer test_c && tests/multirequest.sh && tests/memory_leak_test.sh"
+docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-dbg-fd99596d4c4c9b78f984ee667a9b26b91a28eb8d "composer test_c && tests/multirequest.sh && tests/memory_leak_test.sh"
 
 # Most of our tests use a debug build of PHP, but we do one build against an opt
 # php just in case that surfaces anything unexpected.
-docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-14a06550010c0649bf69b6c9b803c1ca609bbb6d "composer test && composer test_c"
+docker run $(test -t 0 && echo "-it") -v$PWD:/workspace gcr.io/protobuf-build/php/linux:8.0.5-fd99596d4c4c9b78f984ee667a9b26b91a28eb8d "composer test && composer test_c"

php/tests/PhpImplementationTest.php

@@ -275,13 +275,13 @@ class PhpImplementationTest extends TestBase
             $this->assertSame(0x7FFFFFFE, GPBWire::zigZagEncode64(0x3FFFFFFF));
             $this->assertSame(
                 0x7FFFFFFF,
-                GPBWire::zigZagEncode64(0xFFFFFFFFC0000000));
+                GPBWire::zigZagEncode64(-1073741824));  // 0xFFFFFFFFC0000000
             $this->assertSame(
                 0xFFFFFFFE,
                 GPBWire::zigZagEncode64(0x7FFFFFFF));
             $this->assertSame(
                 0xFFFFFFFF,
-                GPBWire::zigZagEncode64(0xFFFFFFFF80000000));
+                GPBWire::zigZagEncode64(-2147483648));  // 0xFFFFFFFF80000000
             $this->assertSame(
                 -2,  // 0xFFFFFFFFFFFFFFFE
                 GPBWire::zigZagEncode64(0x7FFFFFFFFFFFFFFF));

protobuf_deps.bzl

@@ -41,8 +41,8 @@ def protobuf_deps():
         _github_archive(
             name = "com_google_absl",
             repo = "https://github.com/abseil/abseil-cpp",
-            commit = "215105818dfde3174fe799600bb0f3cae233d0bf",
-            sha256 = "b4e20d9e752a75c10636675691b1e9c2698e0764cb404987d0ffa77223041c19",
+            commit = "273292d1cfc0a94a65082ee350509af1d113344d",
+            sha256 = "6764f226bd6e2d8ab9fe2f3cab5f45fb1a4a15c04b58b87ba7fa87456054f98b",
         )
 
     if not native.existing_rule("zlib"):