chore: bump toolchain to v4.30.0-rc2 (#383)

Author: Garmelon

lake-manifest.json

@@ -5,7 +5,7 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "4dfd48ca35193382ddf4c64eef5cdd4f6091bef3",
+   "rev": "c7326b06de365308e008bdfe379909e44334a2e2",
    "name": "leansqlite",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -15,7 +15,7 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "f7d0ca7c926cdde0562af20394dd25d028b839a5",
+   "rev": "13567aed1ac4f12aea9484178e07e51f8c9f7658",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -25,7 +25,7 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "c8bc12a81fd4ee633719f7fd3f587eca7d0e87ab",
+   "rev": "05954ce1797e6bd6b414c916499fe6dda4a11702",
    "name": "UnicodeBasic",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -55,7 +55,7 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "b3dd6c3ebc0a71685e86bea9223be39ea4c299fb",
+   "rev": "86210d4ad1b08b086d0bd638637a75246523dbb8",
    "name": "plausible",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",

lean-toolchain

@@ -1 +1 @@
-leanprover/lean4:v4.30.0-rc1
+leanprover/lean4:v4.30.0-rc2