chore: fix annoying eslint issue

eslint would report nonsense like
opentelemetry-js-distribution/src/2.x/detectors/node/opentelemetry-resource-detector-kubernetes-pod/.index_test.ts.swp
  1:0  error  Parsing error: Unexpected keyword or identifier

due to rules with a `files` pattern without file type suffix.
Adding file type suffixes to the patterns fixes that.

Author: basti1302

eslint.config.mjs

@@ -47,13 +47,17 @@ export default tseslint.config(
     },
   },
   {
-    files: ['src/**/*_test.*', 'test/**/*'],
+    // Note: These patterns need to have a file type extension, otherwise they will match temp files like `.swp` from
+    // vim.
+    files: ['src/**/*_test*.ts', 'test/**/*.ts', 'test/**/*.js'],
     rules: {
       '@typescript-eslint/no-unused-expressions': 'off',
     },
   },
   {
-    files: ['**/.mocharc.*'],
+    // Note: These patterns need to have a file type extension, otherwise they will match temp files like `.swp` from
+    // vim.
+    files: ['**/.mocharc.*.js'],
     rules: {
       '@typescript-eslint/no-require-imports': 'off',
     },