GitHub actions: cache v2

Author: ethercrow

.github/workflows/ci.yml

@@ -13,17 +13,17 @@ jobs:
         ghc: ['8.6', '8.8', '8.10']
     steps:
     - uses: actions/checkout@v1
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache ~/.cabal/packages
       with:
         path: ~/.cabal/packages
         key: ${{ runner.os }}-${{ matrix.ghc }}-cabal-packages
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache ~/.cabal/store
       with:
         path: ~/.cabal/store
         key: ${{ runner.os }}-${{ matrix.ghc }}-cabal-store
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache dist-newstyle
       with:
         path: dist-newstyle
@@ -50,12 +50,12 @@ jobs:
         stack-yaml: ['stack.yaml', 'stack-8.6.yaml', 'stack-8.10.1.yaml']
     steps:
     - uses: actions/checkout@v1
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache ~/.stack
       with:
         path: ~/.stack
         key: ${{ runner.os }}-${{ matrix.stack-yaml }}-stack-home
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache .stack-work
       with:
         path: .stack-work
@@ -82,12 +82,12 @@ jobs:
         stack-yaml: ['stack.yaml', 'stack-8.10.1.yaml']
     steps:
     - uses: actions/checkout@v1
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache ~/.stack
       with:
         path: ~/.stack
         key: ${{ runner.os }}-${{ matrix.stack-yaml }}-stack-home
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache .stack-work
       with:
         path: .stack-work
@@ -114,17 +114,17 @@ jobs:
         ghc: ['8.10']
     steps:
     - uses: actions/checkout@v1
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache ~/.cabal/packages
       with:
         path: ~/.cabal/packages
         key: ${{ runner.os }}-${{ matrix.ghc }}-cabal-packages
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache ~/.cabal/store
       with:
         path: ~/.cabal/store
         key: ${{ runner.os }}-${{ matrix.ghc }}-cabal-store
-    - uses: actions/cache@v1
+    - uses: actions/cache@v2
       name: Cache dist-newstyle
       with:
         path: dist-newstyle