ci: update dependabot pipeline (solana-labs#1496)

* ci: use pull_request_target for dependabot pr pipeline

* use both strict rule and loose rule

* upper-case

* Revert "ci: use pull_request_target for dependabot pr pipeline"

This reverts commit 8745388.

.github/workflows/dependabot-pr.yml

@@ -32,8 +32,8 @@ jobs:
           new_version="${BASH_REMATCH[3]}"
           echo "crate_name: $crate_name, old_version: $old_version, new_version: $new_version"
 
-          ./scripts/cargo-for-all-lock-files.sh -- update -p $crate_name:$old_version --precise $new_version
-          ./scripts/cargo-for-all-lock-files.sh -- tree
+          ./scripts/cargo-for-all-lock-files.sh -- update -p $crate_name:$old_version --precise $new_version || \
+          ./scripts/cargo-for-all-lock-files.sh -- update -p $crate_name --precise $new_version
 
       - name: push
         run: |
@@ -43,6 +43,6 @@ jobs:
             git config user.email "49699333+dependabot[bot]@users.noreply.github.com"
             git config user.name "dependabot[bot]"
             git add **/Cargo.lock
-            git commit -am "update all Cargo files"
+            git commit -am "Update all Cargo files"
             git push
           fi