replace deprecated actions/cache@v4 with actions/cache@v5

Author: tersec

.github/actions/install_nim/action.yml

@@ -37,17 +37,6 @@ runs:
         chmod 755 external/bin/gcc external/bin/g++
         echo '${{ github.workspace }}/external/bin' >> $GITHUB_PATH
 
-    - name: MSYS2 (Windows i386)
-      if: inputs.os == 'Windows' && inputs.cpu == 'i386'
-      uses: msys2/setup-msys2@v2
-      with:
-        path-type: inherit
-        msystem: MINGW32
-        install: >-
-          base-devel
-          git
-          mingw-w64-i686-toolchain
-
     - name: MSYS2 (Windows amd64)
       if: inputs.os == 'Windows' && inputs.cpu == 'amd64'
       uses: msys2/setup-msys2@v2
@@ -61,7 +50,7 @@ runs:
     - name: Restore Nim DLLs dependencies (Windows) from cache
       if: inputs.os == 'Windows'
       id: windows-dlls-cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: external/dlls
         key: 'dlls'
@@ -116,7 +105,7 @@ runs:
 
     - name: Restore Nim from cache
       id: nim-cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: '${{ github.workspace }}/nim'
         key: ${{ inputs.os }}-${{ inputs.cpu }}-nim-${{ inputs.nim_ref }}-cache-${{ env.cache_nonce }}

.github/workflows/test.yml

@@ -71,7 +71,7 @@ jobs:
       - name: Restore llvm-mingw (Windows) from cache
         if: runner.os == 'Windows'
         id: windows-mingw-cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: external/mingw-${{ matrix.platform.cpu }}
           key: 'mingw-llvm-17-${{ matrix.platform.cpu }}'