fix: correct .PHONY target for test_deadlock (#2882)

Fix incorrect .PHONY target for test_deadlock was test_race

<!-- devin-review-badge-begin -->

---

<a
href="https://app.devin.ai/review/celestiaorg/celestia-core/pull/2882"
target="_blank">
  <picture>
<source media="(prefers-color-scheme: dark)"
srcset="https://static.devin.ai/assets/gh-open-in-devin-review-dark.svg?v=1">
<img
src="https://static.devin.ai/assets/gh-open-in-devin-review-light.svg?v=1"
alt="Open with Devin">
  </picture>
</a>
<!-- devin-review-badge-end -->

(cherry picked from commit 39b806b)

# Conflicts:
#	tests.mk

Author: operagxsasha

tests.mk

@@ -83,5 +83,10 @@ test_race:
 #? test_deadlock: Run go tests with deadlock detector
 test_deadlock:
 	@echo "--> Running go test --deadlock"
+<<<<<<< HEAD
 	@go test -p 1 -v  $(PACKAGES) -tags deadlock 
 .PHONY: test_race
+=======
+	@go test -p 1 -v  $(PACKAGES) -tags deadlock
+.PHONY: test_deadlock
+>>>>>>> 39b806b5 (fix: correct .PHONY target for test_deadlock (#2882))