fix: update copyright template to use custom format with dynamic year

.github/scripts/LICENSE_TEMPLATE

@@ -0,0 +1 @@
+Copyright (c) {{.Year}} Airbyte, Inc., all rights reserved.

.github/scripts/add_copyright.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+
+YEAR=$(date +%Y)
+
+if ! command -v addlicense &> /dev/null; then
+    echo "Installing addlicense..."
+    go install github.com/google/addlicense@latest
+    export PATH=$PATH:$(go env GOPATH)/bin
+fi
+
+addlicense -c "Airbyte, Inc." -l copyright -v -y "$YEAR" -f .github/scripts/LICENSE_TEMPLATE "$@"

.pre-commit-config.yaml

@@ -57,7 +57,6 @@ repos:
     hooks:
       - id: addlicense
         name: Add license headers
-        entry: addlicense -c "Airbyte, Inc." -l apache -v -f LICENSE_SHORT
-        language: golang
-        additional_dependencies: [github.com/google/addlicense@v1.1.1]
+        entry: .github/scripts/add_copyright.sh
+        language: system
         files: \.py$