use actions/cache@v4

Author: mohawk2

.github/workflows/linux.yml

@@ -106,7 +106,7 @@ jobs:
           cip cache-key
 
       - name: Cache CPAN modules
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.cip
           key: ${{ runner.os }}-build-${{ steps.cache-key.outputs.key }}

.github/workflows/macos.yml

@@ -40,7 +40,7 @@ jobs:
           ls -l perlversion.txt
 
       - name: Cache CPAN modules
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/perl5
           key: ${{ runner.os }}-build-${{ hashFiles('perlversion.txt') }}

.github/workflows/msys2-mingw.yml

@@ -58,7 +58,7 @@ jobs:
           ls perlversion.txt
 
       - name: Cache CPAN modules
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: c:\cx
           key: ${{ runner.os }}-build-msys2-${{ hashFiles('perlversion.txt') }}

.github/workflows/windows.yml

@@ -43,7 +43,7 @@ jobs:
           perl -V > perlversion.txt
 
       - name: Cache CPAN modules
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         env:
           cache-name: cache-cpan-modules
         with: