Replace loopvar linter (#5976)

## Which problem is this PR solving?
- Resolves #5972 

## Description of the changes
- Changed the loopvar linter to copyloopvar.

## How was this change tested?
- 

## Checklist
- [ ] I have read
https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
- [ ] I have signed all commits
- [ ] I have added unit tests for the new functionality
- [ ] I have run lint and test steps successfully
  - for `jaeger`: `make lint test`
  - for `jaeger-ui`: `yarn lint` and `yarn test`

Signed-off-by: Anish Bista <[email protected]>

.golangci.yml

@@ -61,7 +61,7 @@ linters:
     - errorlint
 
     # Checks for pointers to enclosing loop variables.
-    - exportloopref
+    - copyloopvar
 
     - gocritic
     - gofmt

cmd/collector/app/handler/grpc_handler_test.go

@@ -397,7 +397,6 @@ func TestBatchConsumer(t *testing.T) {
 
 	logger, _ := testutils.NewLogger()
 	for _, tc := range tests {
-		tc := tc
 		t.Parallel()
 		t.Run(tc.name, func(t *testing.T) {
 			processor := mockSpanProcessor{}

cmd/query/app/handler_archive_test.go

@@ -35,7 +35,6 @@ func TestGetArchivedTrace_NotFound(t *testing.T) {
 			reader: mockReader,
 		},
 	} {
-		tc := tc // capture loop var
 		t.Run(tc.name, func(t *testing.T) {
 			withTestServer(t, func(ts *testServer) {
 				ts.spanReader.On("GetTrace", mock.AnythingOfType("*context.valueCtx"), mock.AnythingOfType("model.TraceID")).