ci: fix all linter errors found in golangci-lint

Fixing all the linter errors found in golang-ci
lint v1.46.2

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

internal/kms/vault_tokens_test.go

@@ -120,6 +120,7 @@ func TestInitVaultTokensKMS(t *testing.T) {
 	// add tenant "bob"
 	bob := make(map[string]interface{})
 	bob["vaultAddress"] = "https://vault.bob.example.org"
+	//nolint:forcetypeassert // as its a test we dont need to check assertion here.
 	args.Config["tenants"].(map[string]interface{})["bob"] = bob
 
 	_, err = initVaultTokensKMS(args)