Downgrade @glint/template (newer version are not compatible with glint v1)

Author: mkszepp

docs/package.json

@@ -52,7 +52,7 @@
     "@glint/core": "^1.5.2",
     "@glint/environment-ember-loose": "^1.5.2",
     "@glint/environment-ember-template-imports": "^1.5.2",
-    "@glint/template": "1.7.3",
+    "@glint/template": "1.5.2",
     "@rollup/plugin-babel": "^6.1.0",
     "@tsconfig/ember": "^3.0.12",
     "@types/qunit": "^2.19.13",

ember-basic-dropdown/package.json

@@ -83,7 +83,7 @@
     "@glint/core": "^1.5.2",
     "@glint/environment-ember-loose": "^1.5.2",
     "@glint/environment-ember-template-imports": "^1.5.2",
-    "@glint/template": "1.7.3",
+    "@glint/template": "1.5.2",
     "@glimmer/component": "^2.0.0",
     "@glimmer/tracking": "^1.1.2",
     "@rollup/plugin-babel": "^6.1.0",