Upgrade all dev dependencies

I was running into cryptic build errors that seemed related to old
versions of dev dependencies, specifically this one for an old version
of webpack (two major versions behind):
TypeStrong/ts-loader#595 (comment)

I upgraded webpack and ran into another strange error so I opted to
upgrade all dev dependencies (they are only dev dependencies after all
and as long as it builds and tests properly we should be good).

package.json

@@ -31,28 +31,29 @@
   ],
   "homepage": "https://github.com/azavea/loam",
   "devDependencies": {
-    "@babel/cli": "^7.0.0",
-    "@babel/core": "^7.0.0",
-    "@babel/preset-env": "^7.0.0",
-    "babel-eslint": "^10.0.0",
-    "babel-loader": "^8.0.0",
-    "babel-plugin-add-module-exports": "^1.0.2",
-    "chai": "^4.1.2",
+    "@babel/cli": "^7.13.16",
+    "@babel/core": "^7.13.16",
+    "@babel/preset-env": "^7.13.15",
+    "babel-eslint": "^10.1.0",
+    "babel-loader": "^8.2.2",
+    "babel-plugin-add-module-exports": "^1.0.4",
+    "chai": "^4.3.4",
     "chai-as-promised": "^7.1.1",
-    "eslint": "^4.13.1",
-    "eslint-loader": "^1.9.0",
-    "karma": "^4.0.0",
+    "eslint": "^7.25.0",
+    "eslint-loader": "^4.0.2",
+    "karma": "^6.3.2",
     "karma-babel-preprocessor": "^8.0.0",
     "karma-chai": "^0.1.0",
     "karma-chai-as-promised": "^0.1.2",
     "karma-chrome-launcher": "^3.1.0",
-    "karma-mocha": "^1.3.0",
-    "mocha": "^6.0.0",
-    "prettier": "^2.1.2",
+    "karma-mocha": "^2.0.1",
+    "mocha": "^8.3.2",
+    "prettier": "^2.2.1",
     "ts-loader": "^9.1.1",
     "typescript": "^4.2.4",
-    "webpack": "^3.10.0",
-    "yargs": "^14.0.0"
+    "webpack": "^5.35.1",
+    "webpack-cli": "^4.6.0",
+    "yargs": "^16.2.0"
   },
   "dependencies": {
     "gdal-js": "2.0.0"