Update GitHub Actions workflows. (#313)

This PR was automatically generated by the
update-workflows-ecosystem-providers workflow in the pulumi/ci-mgmt
repo, from commit 6ac78e5c5cbd53bee8e951f48779dbe39b73a9bc.

.github/workflows/license.yml

@@ -63,6 +63,7 @@ jobs:
           github.com/cloudflare/circl,
           github.com/golang,
           github.com/gorhill/cronexpr,
+          github.com/in-toto/in-toto-golang,
           github.com/jmespath/go-jmespath,
           github.com/keybase/go-crypto,
           github.com/klauspost/compress,

.github/workflows/run-acceptance-tests.yml

@@ -396,10 +396,6 @@ jobs:
 name: run-acceptance-tests
 on:
   pull_request:
-    branches:
-    - master
-    - v*
-    - feature*
     paths-ignore:
     - CHANGELOG.md
   repository_dispatch: