Bump minimatch from 3.0.4 to 3.0.8 in /test/dummy_webpacker3

Bumps [minimatch](https://github.com/isaacs/minimatch) from 3.0.4 to 3.0.8.
- [Release notes](https://github.com/isaacs/minimatch/releases)
- [Commits](isaacs/minimatch@v3.0.4...v3.0.8)

---
updated-dependencies:
- dependency-name: minimatch
  dependency-type: indirect
...

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

Author: dependabot[bot]

test/dummy_webpacker3/yarn.lock

@@ -1682,7 +1682,7 @@ compression@^1.7.3:
 concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
-  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
+  integrity sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==
 
 concat-stream@^1.5.0:
   version "1.6.2"
@@ -4335,9 +4335,9 @@ minimalistic-crypto-utils@^1.0.1:
   integrity sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=
 
 minimatch@^3.0.4, minimatch@~3.0.2:
-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
-  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
+  version "3.0.8"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.8.tgz#5e6a59bd11e2ab0de1cfb843eb2d82e546c321c1"
+  integrity sha512-6FsRAQsxQ61mw+qP1ZzbL9Bc78x2p5OqNgNpnoAFLTrX8n5Kxph0CsnhmKKNXTWjXqU5L0pGPR7hYk+XWZr60Q==
   dependencies:
     brace-expansion "^1.1.7"