Bump StableHLO to openxla/stablehlo@23d7f60. (#19754)
This includes LLVM updates in StableHLO that resolve compiler warnings
like
```
[5467/8397] Building CXX object llvm-external-projects/stablehlo/stablehlo/transforms/CMakeFiles/obj.StablehloPasses.dir/StablehloCanonicalizeDynamism.cpp.o
/__w/iree/iree/third_party/stablehlo/stablehlo/transforms/StablehloCanonicalizeDynamism.cpp:326:16: warning: 'applyPatternsAndFoldGreedily' is deprecated: Use applyPatternsGreedily() instead [-Wdeprecated-declarations]
if (failed(applyPatternsAndFoldGreedily(func, patterns, config))) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
applyPatternsGreedily
/__w/iree/iree/third_party/llvm-project/mlir/include/mlir/Transforms/GreedyPatternRewriteDriver.h:184:1: note: 'applyPatternsAndFoldGreedily' has been explicitly marked deprecated here
LLVM_DEPRECATED("Use applyPatternsGreedily() instead", "applyPatternsGreedily")
^
/__w/iree/iree/third_party/llvm-project/llvm/include/llvm/Support/Compiler.h:234:50: note: expanded from macro 'LLVM_DEPRECATED'
#define LLVM_DEPRECATED(MSG, FIX) __attribute__((deprecated(MSG, FIX)))
^
1 warning generated.
```
(thanks to
https://github.com/openxla/stablehlo/commit/b2d36c56613163084e369cf2df7b2527608f74d9)diff --git a/third_party/stablehlo b/third_party/stablehlo
index c32f7c2..23d7f60 160000
--- a/third_party/stablehlo
+++ b/third_party/stablehlo
@@ -1 +1 @@
-Subproject commit c32f7c215d9bed2d4077a7f884781f02e61df292
+Subproject commit 23d7f60f4f604f9d0ee89023e333422d996537fa
