Remove trailing spaces (#7426)

scripts/vet-proto.sh

@@ -1,4 +1,4 @@
-#!/bin/bash 
+#!/bin/bash
 
 set -ex  # Exit on error; debugging enabled.
 set -o pipefail  # Fail a pipe if any sub-command fails.

scripts/vet.sh

@@ -90,7 +90,7 @@ for MOD_FILE in $(find . -name 'go.mod'); do
   go mod tidy -compat=1.21
   git status --porcelain 2>&1 | fail_on_output || \
     (git status; git --no-pager diff; exit 1)
- 
+
   # - Collection of static analysis checks
   SC_OUT="$(mktemp)"
   staticcheck -go 1.21 -checks 'all' ./... >"${SC_OUT}" || true