fix(ci): move git diff check to the end of job run

Go modules might trigger some changes now, ensure that we check for diff after building everything

.travis.yml

@@ -86,9 +86,6 @@ jobs:
         - go mod download
         # compile assets via webpack and build those into bindata_assetfs.go file
         - make bindata_assetfs.go
-        # verify that there are no uncommited changes from (re)compiling sass
-        # assets
-        - git diff --exit-code
         # install bakelite, we can't "go get" a tag from github, so we fetch the binary
         - export BAKELITE_VERSION="v0.2.0"
         - export BAKELITE_OS=$(go env GOHOSTOS)
@@ -100,6 +97,8 @@ jobs:
         - ./bakelite-${BAKELITE_OS}-${BAKELITE_ARCH} -platforms="-plan9" -ldflags="-X main.version=\"$(make show-version)\"" github.com/prymitive/karma
         - for i in karma-*; do tar --mtime="${SOURCE_DATE_EPOCH}" --owner=0 --group=0 --numeric-owner -c $i | gzip -n - > $i.tar.gz; done
         - shasum -a 512 karma-*.tar.gz | tee sha512sum.txt
+        # verify that there are no uncommited changes
+        - git diff --exit-code
       deploy:
         provider: releases
         api_key: