Update CI cache action versions (#435)

* updated cache action versions

* added actions to watched paths

* updated cache version for examples workflow

.github/actions/rust/rust-setup/action.yml

@@ -27,7 +27,7 @@ runs:
         override: true
 
     - name: Cache cargo
-      uses: actions/cache@v2.1.4
+      uses: actions/cache@v2.1.6
       with:
         # https://doc.rust-lang.org/cargo/guide/cargo-home.html#caching-the-cargo-home-in-ci
         path: |
@@ -52,7 +52,7 @@ runs:
         command: update
 
     - name: Cache build target
-      uses: actions/cache@v2.1.4
+      uses: actions/cache@v2.1.6
       with:
         path: ${{ inputs.target-cache-path }}
         # Add date to the cache to keep it up to date

.github/workflows/build-and-test.yml

@@ -11,6 +11,7 @@ on:
       - dev
     paths:
       - '.github/workflows/build-and-test.yml'
+      - '.github/actions'
       - '**.rs'
       - '**.toml'
 

.github/workflows/examples.yml

@@ -29,7 +29,7 @@ jobs:
         run: echo "CURRENT_DATE=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
 
       - name: Cache cargo
-        uses: actions/cache@v2.1.4
+        uses: actions/cache@v2.1.6
         with:
           # https://doc.rust-lang.org/cargo/guide/cargo-home.html#caching-the-cargo-home-in-ci
           path: |
@@ -79,7 +79,7 @@ jobs:
         run: echo "CURRENT_DATE=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
 
       - name: Cache cargo
-        uses: actions/cache@v2.1.4
+        uses: actions/cache@v2.1.6
         with:
           # https://doc.rust-lang.org/cargo/guide/cargo-home.html#caching-the-cargo-home-in-ci
           path: |