[llvm] [lit] Use `.format()` over format strings literals (PR #155912)

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``````````diff
--- lit.cfg.py	2025-08-28 20:02:54.000000 +0000
+++ lit.cfg.py	2025-08-28 20:07:08.435182 +0000
@@ -319,11 +319,13 @@
 def ptxas_supported_isa_versions(ptxas, major_version, minor_version):
     supported_isa_versions = ptxas_isa_versions(ptxas)
     if supported_isa_versions:
         return supported_isa_versions
     if major_version >= 13:
-        raise RuntimeError("ptxas {} does not support ISA version listing".format(ptxas))
+        raise RuntimeError(
+            "ptxas {} does not support ISA version listing".format(ptxas)
+        )
 
     cuda_version_to_isa_version = {
         (12, 9): [(8, 8)],
         (12, 8): [(8, 7)],
         (12, 7): [(8, 6)],

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https://github.com/llvm/llvm-project/pull/155912