ci: bump mcpp 0.0.79 -> 0.0.81 (typed import mcpp; for build-mcpp member)

Author: Sunrisepeak

.github/workflows/validate.yml

@@ -13,7 +13,7 @@ on:
 env:
   # Bumped to 0.0.78: carries L3 build.mcpp native build program (build-mcpp member),
   # compat.openblas Windows recipe (bin/libopenblas.dll staged beside the .exe).
-  MCPP_VERSION: "0.0.79"
+  MCPP_VERSION: "0.0.81"
 
 jobs:
   lint:
@@ -111,20 +111,20 @@ jobs:
         include:
           - platform: linux
             os: ubuntu-latest
-            archive: mcpp-0.0.79-linux-x86_64.tar.gz
-            root: mcpp-0.0.79-linux-x86_64
+            archive: mcpp-0.0.81-linux-x86_64.tar.gz
+            root: mcpp-0.0.81-linux-x86_64
             mcpp: bin/mcpp
             xlings: registry/bin/xlings
           - platform: macos
             os: macos-15
-            archive: mcpp-0.0.79-macosx-arm64.tar.gz
-            root: mcpp-0.0.79-macosx-arm64
+            archive: mcpp-0.0.81-macosx-arm64.tar.gz
+            root: mcpp-0.0.81-macosx-arm64
             mcpp: bin/mcpp
             xlings: registry/bin/xlings
           - platform: windows
             os: windows-latest
-            archive: mcpp-0.0.79-windows-x86_64.zip
-            root: mcpp-0.0.79-windows-x86_64
+            archive: mcpp-0.0.81-windows-x86_64.zip
+            root: mcpp-0.0.81-windows-x86_64
             mcpp: bin/mcpp.exe
             xlings: registry/bin/xlings.exe
     steps: