BUG/MINOR: ci: use two-dot range for checking differences

Change the git log range operator from `...` (three-dot) to `..` (two-dot) in CI job. This ensures that the script only validates new commits from the current branch by properly excluding commits that are already in the target branch.

Author: oktalz

.gitlab/diff.yml

@@ -65,7 +65,7 @@ check-large-files:
     # List all files in the latest commit that are larger than 1MB
     - |
       git fetch origin ${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}
-      git diff --name-only origin/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}...HEAD | while read file; do
+      git diff --name-only origin/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}..HEAD | while read file; do
         if [ -f "$file" ] && [ $(stat -c%s "$file") -gt 1048576 ]; then
           echo "$file"
         fi

.gitlab/lint.yml

@@ -112,7 +112,7 @@ check-committer:
     - |
       git fetch origin ${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}
       BAD_EMAILS=""
-      for COMMIT in $(git log --format='%H' origin/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}...HEAD); do
+      for COMMIT in $(git log --format='%H' origin/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}..HEAD); do
         EMAIL=$(git log -1 --format='%ae' "$COMMIT")
         MSG=$(git log -1 --format='%s' "$COMMIT")
         case "$EMAIL" in
@@ -125,7 +125,7 @@ check-committer:
         esac
       done
       CO_AUTHORED=""
-      for COMMIT in $(git log --format='%H' origin/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}...HEAD); do
+      for COMMIT in $(git log --format='%H' origin/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}..HEAD); do
         BODY=$(git log -1 --format='%b' "$COMMIT")
         MSG=$(git log -1 --format='%s' "$COMMIT")
         MATCHED=$(echo "$BODY" | grep -i 'Co-authored-by' || true)