build: update @angular/dev-infra-private commit hash to 6df6965

(cherry picked from commit 78cb7a2)

Author: renovate-bot

package.json

@@ -72,7 +72,7 @@
     "@angular/compiler": "12.1.0-next.6",
     "@angular/compiler-cli": "12.1.0-next.6",
     "@angular/core": "12.1.0-next.6",
-    "@angular/dev-infra-private": "https://github.com/angular/dev-infra-private-builds.git#d9656f649e17c99eb48bebee6c045db479a5cfb4",
+    "@angular/dev-infra-private": "https://github.com/angular/dev-infra-private-builds.git#6df6965081c403bab4ab9a38831936c3ecae2589",
     "@angular/forms": "12.1.0-next.6",
     "@angular/localize": "12.1.0-next.6",
     "@angular/material": "12.1.0-rc.0",

yarn.lock

@@ -84,9 +84,9 @@
   dependencies:
     tslib "^2.0.0"
 
-"@angular/dev-infra-private@https://github.com/angular/dev-infra-private-builds.git#d9656f649e17c99eb48bebee6c045db479a5cfb4":
+"@angular/dev-infra-private@https://github.com/angular/dev-infra-private-builds.git#6df6965081c403bab4ab9a38831936c3ecae2589":
   version "0.0.0"
-  resolved "https://github.com/angular/dev-infra-private-builds.git#d9656f649e17c99eb48bebee6c045db479a5cfb4"
+  resolved "https://github.com/angular/dev-infra-private-builds.git#6df6965081c403bab4ab9a38831936c3ecae2589"
   dependencies:
     "@angular/benchpress" "0.2.1"
     "@bazel/buildifier" "^4.0.1"
@@ -112,7 +112,6 @@
     protractor "^7.0.0"
     selenium-webdriver "3.5.0"
     semver "^7.3.5"
-    shelljs "^0.8.4"
     ts-node "^10.0.0"
     tslib "^2.2.0"
     typed-graphqlify "^3.1.1"
@@ -10555,7 +10554,7 @@ shebang-regex@^3.0.0:
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-3.0.0.tgz#ae16f1644d873ecad843b0307b143362d4c42172"
   integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
 
-shelljs@^0.8.3, shelljs@^0.8.4:
+shelljs@^0.8.3:
   version "0.8.4"
   resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.4.tgz#de7684feeb767f8716b326078a8a00875890e3c2"
   integrity sha512-7gk3UZ9kOfPLIAbslLzyWeGiEqx9e3rxwZM0KE6EL8GlGwjym9Mrlx5/p33bWTu9YG6vcS4MBxYZDHYr5lr8BQ==