use unique key for each workflow

.github/workflows/documentation.yaml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/cache@v2
         with:
           path: "**/cpm_modules"
-          key: ${{ runner.os }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
+          key: ${{ github.action }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: Install dependencies
         run: |

.github/workflows/install.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/cache@v2
         with:
           path: "**/cpm_modules"
-          key: ${{ runner.os }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
+          key: ${{ github.action }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: build and install library
         run: |

.github/workflows/macos.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/cache@v2
         with:
           path: "**/cpm_modules"
-          key: ${{ runner.os }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
+          key: ${{ github.action }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: configure
         env:

.github/workflows/standalone.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/cache@v2
         with:
           path: "**/cpm_modules"
-          key: ${{ runner.os }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
+          key: ${{ github.action }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: configure
         env:

.github/workflows/style.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/cache@v2
         with:
           path: "**/cpm_modules"
-          key: ${{ runner.os }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
+          key: ${{ github.action }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: Install format dependencies
         run: |

.github/workflows/ubuntu.yml

@@ -22,7 +22,7 @@ jobs:
       - uses: actions/cache@v2
         with:
           path: "**/cpm_modules"
-          key: ${{ runner.os }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
+          key: ${{ github.action }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: configure
         env:

.github/workflows/windows.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/cache@v2
         with:
           path: "**/cpm_modules"
-          key: ${{ runner.os }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
+          key: ${{ github.action }}-cpm-modules-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
 
       - name: configure
         env: