Bump base image to 3.4.0 (#1879)

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     # cpp lint job runs with esphome-lint docker image so that clang-format-*
     # doesn't have to be installed
-    container: esphome/esphome-lint:1.0
+    container: esphome/esphome-lint:1.1
     steps:
       - uses: actions/checkout@v2
       # Set up the pio project so that the cpp checks know how files are compiled
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     # cpp lint job runs with esphome-lint docker image so that clang-format-*
     # doesn't have to be installed
-    container: esphome/esphome-lint:1.0
+    container: esphome/esphome-lint:1.1
     # Split clang-tidy check into 4 jobs. Each one will check 1/4th of the .cpp files
     strategy:
       fail-fast: false