fix(i): Change detector missing deps (sourcenetwork#1899)

## Relevant issue(s)

N/A

## Description

This PR fixes an issue where the change detector was not installing
dependencies when using a local target branch.

## Tasks

- [x] I made sure the code is well commented, particularly
hard-to-understand areas.
- [x] I made sure the repository-held documentation is changed
accordingly.
- [x] I made sure the pull request title adheres to the conventional
commit style (the subset used in the project can be found in
[tools/configs/chglog/config.yml](tools/configs/chglog/config.yml)).
- [x] I made sure to discuss its limitations such as threats to
validity, vulnerability to mistake and misuse, robustness to
invalidation of assumptions, resource requirements, ...

## How has this been tested?

CI

Specify the platform(s) on which this was tested:
- MacOS

tests/change_detector/change_detector_test.go

@@ -28,7 +28,6 @@ import (
 func TestChanges(t *testing.T) {
 	sourceRepoDir := t.TempDir()
 	execClone(t, sourceRepoDir, Repository, SourceBranch)
-	execMakeDeps(t, sourceRepoDir)
 
 	var targetRepoDir string
 	if TargetBranch == "" {
@@ -40,13 +39,15 @@ func TestChanges(t *testing.T) {
 		// check out the target branch
 		targetRepoDir = t.TempDir()
 		execClone(t, targetRepoDir, Repository, TargetBranch)
-		execMakeDeps(t, targetRepoDir)
 	}
 
 	if checkIfDatabaseFormatChangesAreDocumented(t, sourceRepoDir, targetRepoDir) {
 		t.Skip("skipping test with documented database format changes")
 	}
 
+	execMakeDeps(t, sourceRepoDir)
+	execMakeDeps(t, targetRepoDir)
+
 	targetRepoTestDir := filepath.Join(targetRepoDir, "tests", "integration")
 	targetRepoPkgList := execList(t, targetRepoTestDir)