Bump technote-space/get-diff-action from 4.2 to 5 (#306)

Bumps [technote-space/get-diff-action](https://github.com/technote-space/get-diff-action) from 4.2 to 5.
- [Release notes](https://github.com/technote-space/get-diff-action/releases)
- [Changelog](https://github.com/technote-space/get-diff-action/blob/main/.releasegarc)
- [Commits](technote-space/get-diff-action@v4.2...v5)

---
updated-dependencies:
- dependency-name: technote-space/get-diff-action
  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>

Author: dependabot[bot]

.github/workflows/test.yml

@@ -41,7 +41,7 @@ jobs:
       - uses: actions/setup-go@v2.1.3
         with:
           go-version: 1.15
-      - uses: technote-space/get-diff-action@v4.2
+      - uses: technote-space/get-diff-action@v5
         id: git_diff
         with:
           PATTERNS: |
@@ -89,7 +89,7 @@ jobs:
       - uses: actions/setup-go@v2.1.3
         with:
           go-version: 1.15
-      - uses: technote-space/get-diff-action@v4.2
+      - uses: technote-space/get-diff-action@v5
         with:
           PATTERNS: |
             **/**.go
@@ -113,7 +113,7 @@ jobs:
     needs: tests
     steps:
       - uses: actions/checkout@v2.3.4
-      - uses: technote-space/get-diff-action@v4.2
+      - uses: technote-space/get-diff-action@v5
         with:
           PATTERNS: |
             **/**.go