Auto merge of rust-lang#15333 - davidbarsky:davidbarsky/downgrade-vscode-to-1.75, r=lnicola

vscode: change minimum VS Code version to 1.75 from 1.78

I previously mentioned [in a comment](rust-lang/rust-analyzer#15265 (comment)) that folks at my employer are on 1.78, but I was incorrect: people are on 1.75. I know this is outside the standard version support policy, but I haven't seen any of the new features in VS Code be used in rust-analyzer. The most applicable feature in those three versions of VS Code that I can find [is lazily resolving code actions](https://code.visualstudio.com/updates/v1_78#_resolve-code-action-commands-in-resolvecodeaction), but it doesn't seem like rust-analyzer is making use of that feature.

(I'll be posting a PR that adds support for `$saved_file` within the next day, so feel free to bump the minimum VS Code version back to 1.78 if/when that PR lands. This just makes vendoring the _actual_ change I'm interested in a little bit easier.)

Author: bors

editors/code/package-lock.json

@@ -26,7 +26,7 @@
         }
     },
     "engines": {
-        "vscode": "^1.78.0"
+        "vscode": "^1.75.0"
     },
     "enabledApiProposals": [],
     "scripts": {
@@ -53,7 +53,7 @@
     "devDependencies": {
         "@tsconfig/strictest": "^2.0.1",
         "@types/node": "~16.11.7",
-        "@types/vscode": "~1.78.1",
+        "@types/vscode": "~1.75",
         "@typescript-eslint/eslint-plugin": "^6.0.0",
         "@typescript-eslint/parser": "^6.0.0",
         "@vscode/test-electron": "^2.3.3",