Bump ts-jest from 26.5.2 to 26.5.4 (#25)

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 26.5.2 to 26.5.4.
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](kulshekhar/ts-jest@v26.5.2...v26.5.4)

Signed-off-by: dependabot[bot] <[email protected]>

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

yarn.lock

@@ -610,7 +610,7 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
-"@types/jest@26.x", "@types/jest@^26.0.19":
+"@types/jest@^26.0.19":
   version "26.0.20"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.20.tgz#cd2f2702ecf69e86b586e1f5223a60e454056307"
   integrity sha512-9zi2Y+5USJRxd0FsahERhBwlcvFh6D2GLQnY2FH2BzK8J9s9omvNHIbvABwIluXa0fD8XVKMLTO0aOEuUfACAA==
@@ -4689,11 +4689,10 @@ tr46@^2.0.2:
     punycode "^2.1.1"
 
 ts-jest@^26.4.4:
-  version "26.5.2"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.5.2.tgz#5281d6b44c2f94f71205728a389edc3d7995b0c4"
-  integrity sha512-bwyJ2zJieSugf7RB+o8fgkMeoMVMM2KPDE0UklRLuACxjwJsOrZNo6chrcScmK33YavPSwhARffy8dZx5LJdUQ==
+  version "26.5.4"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-26.5.4.tgz#207f4c114812a9c6d5746dd4d1cdf899eafc9686"
+  integrity sha512-I5Qsddo+VTm94SukBJ4cPimOoFZsYTeElR2xy6H2TOVs+NsvgYglW8KuQgKoApOKuaU/Ix/vrF9ebFZlb5D2Pg==
   dependencies:
-    "@types/jest" "26.x"
     bs-logger "0.x"
     buffer-from "1.x"
     fast-json-stable-stringify "2.x"