Use Swift 6.3.2 for Linux CI

Author: Kyle-Ye

.github/workflows/compute.yml

@@ -12,7 +12,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift_version: ["6.2.4"]
+        # Swift 6.2.4 crashes swift-frontend when compiling C++ interop on Linux.
+        # Swift 6.3.2 has been verified locally on Linux.
+        swift_version: ["6.3.2"]
     runs-on: ubuntu-22.04
     env:
       OPENATTRIBUTEGRAPH_WERROR: 1

.github/workflows/ubuntu.yml

@@ -12,7 +12,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift_version: ["6.2.4"]
+        # Swift 6.2.4 crashes swift-frontend when compiling C++ interop tests on Linux.
+        # Swift 6.3.2 has been verified locally on Linux.
+        swift_version: ["6.3.2"]
     runs-on: ubuntu-22.04
     env:
       OPENATTRIBUTEGRAPH_WERROR: 1