Update ci script (#171)

* Updated 'run-vcpkg' package to v6.

* vcpkg's git commit ID has been updated to the latest master.

.github/workflows/cmake.yml

@@ -17,11 +17,11 @@ jobs:
 
     - name: run vcpkg
       if: matrix.os == 'windows-latest'
-      uses: lukka/run-vcpkg@v3
+      uses: lukka/run-vcpkg@v6
       with:
           vcpkgArguments: getopt:x64-windows libiconv:x64-windows libpng:x64-windows
           vcpkgDirectory: '${{ github.workspace }}/vcpkg'
-          vcpkgGitCommitId: 'fca18ba3572f8aebe3b8158c359db62a7e26134e'
+          vcpkgGitCommitId: '2a42024b53ebb512fb5dd63c523338bf26c8489c'
           appendedCacheKey: ${{ hashFiles( '${{ github.workspace }}/.github/workflows/cmake.yml' ) }}
 
     - name: brew setup

ChangeLog

@@ -5,6 +5,9 @@
 	* README.md:
 	  - 'libpng12-dev' has been corrected to 'libpng-dev'. (closes #170)
 	    (Thanks to @a6q)
+	* .github/workflows/cmake.yml:
+	  - Updated 'run-vcpkg' package to v6.
+	  - vcpkg's git commit ID has been updated to the latest master.
 
 2020.09.29 Kentaro Fukuchi <[email protected]>
 	[develop]