Lock last_green until a BEP bug is fixed (#1569)

bazelbuild/bazel#26962

Signed-off-by: Brentley Jones <[email protected]>

Author: brentleyjones

.bazelci/presubmit.yml

@@ -98,7 +98,9 @@ tasks:
 
   ubuntu2004_last_green:
     name: "Last Green Bazel"
-    bazel: last_green
+    # TODO: Use `last_green` when https://github.com/bazelbuild/bazel/issues/26962 is fixed
+    # bazel: last_green
+    bazel: 0522f8e58bf864005207eb8f09162d35ddd1f678
     shell_commands:
       - "echo --- Downloading and extracting Swift $SWIFT_VERSION to $SWIFT_HOME"
       - "mkdir $SWIFT_HOME"