Bump actions/cache from 2 to 3.0.1 (#105)

Bumps [actions/cache](https://github.com/actions/cache) from 2 to 3.0.1.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v2...v3.0.1)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/testing.yml

@@ -21,7 +21,7 @@ jobs:
           go-version: ${{ matrix.go }}
 
       # Caching go modules to speed up the run
-      - uses: actions/cache@v2
+      - uses: actions/cache@v3.0.1
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -46,7 +46,7 @@ jobs:
           go-version: ${{ matrix.go }}
 
       # Caching go modules to speed up the run
-      - uses: actions/cache@v2
+      - uses: actions/cache@v3.0.1
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -70,7 +70,7 @@ jobs:
           go-version: ${{ matrix.go }}
 
       # Caching go modules to speed up the run
-      - uses: actions/cache@v2
+      - uses: actions/cache@v3.0.1
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -98,7 +98,7 @@ jobs:
           go-version: ${{ matrix.go }}
 
       # Caching go modules to speed up the run
-      - uses: actions/cache@v2
+      - uses: actions/cache@v3.0.1
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}