chore(deps): force execa 9.1

To override 8.x in synthetic-chain that seems to be incompatible with SES:

#51 20.98 TypeError#1: Invalid property descriptor. Cannot both specify accessors and a value or writable attribute, [object Object]
#51 20.98     at InertConstructor.defineProperty (<anonymous>)
#51 20.98     at changeToString (file:///usr/src/proposals/n:upgrade-next/node_modules/mimic-fn/index.js:57:9)
#51 20.98     at mimicFunction (file:///usr/src/proposals/n:upgrade-next/node_modules/mimic-fn/index.js:68:2)
#51 20.98     at onetime (file:///usr/src/proposals/n:upgrade-next/node_modules/onetime/index.js:27:2)
#51 20.98     at execa (file:///usr/src/proposals/n:upgrade-next/node_modules/@agoric/synthetic-chain/node_modules/execa/index.js:160:28)

a3p-integration/proposals/n:upgrade-next/package.json

@@ -32,14 +32,15 @@
   "scripts": {
     "agops": "yarn --cwd /usr/src/agoric-sdk/ --silent agops"
   },
-  "packageManager": "yarn@4.5.3",
+  "packageManager": "yarn@4.6.0",
   "devDependencies": {
     "eslint": "^8.57.0",
     "npm-run-all": "^4.1.5",
     "typescript": "^5.6.3"
   },
   "resolutions": {
     "axios@npm:^1.6.0": "patch:axios@npm%3A1.7.7#~/.yarn/patches/axios-npm-1.7.7-cfbedc233d.patch",
+    "execa@npm:8.x": "npm:9.1.0",
     "protobufjs@npm:^6.8.8": "patch:protobufjs@npm%3A6.11.4#~/.yarn/patches/protobufjs-npm-6.11.4-af11968b80.patch"
   }
 }

a3p-integration/proposals/n:upgrade-next/yarn.lock

@@ -2649,23 +2649,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"execa@npm:8.x":
-  version: 8.0.1
-  resolution: "execa@npm:8.0.1"
-  dependencies:
-    cross-spawn: "npm:^7.0.3"
-    get-stream: "npm:^8.0.1"
-    human-signals: "npm:^5.0.0"
-    is-stream: "npm:^3.0.0"
-    merge-stream: "npm:^2.0.0"
-    npm-run-path: "npm:^5.1.0"
-    onetime: "npm:^6.0.0"
-    signal-exit: "npm:^4.1.0"
-    strip-final-newline: "npm:^3.0.0"
-  checksum: 10c0/2c52d8775f5bf103ce8eec9c7ab3059909ba350a5164744e9947ed14a53f51687c040a250bda833f906d1283aa8803975b84e6c8f7a7c42f99dc8ef80250d1af
-  languageName: node
-  linkType: hard
-
 "execa@npm:9.1.0":
   version: 9.1.0
   resolution: "execa@npm:9.1.0"
@@ -2978,13 +2961,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"get-stream@npm:^8.0.1":
-  version: 8.0.1
-  resolution: "get-stream@npm:8.0.1"
-  checksum: 10c0/5c2181e98202b9dae0bb4a849979291043e5892eb40312b47f0c22b9414fc9b28a3b6063d2375705eb24abc41ecf97894d9a51f64ff021511b504477b27b4290
-  languageName: node
-  linkType: hard
-
 "get-stream@npm:^9.0.0":
   version: 9.0.1
   resolution: "get-stream@npm:9.0.1"
@@ -3255,13 +3231,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"human-signals@npm:^5.0.0":
-  version: 5.0.0
-  resolution: "human-signals@npm:5.0.0"
-  checksum: 10c0/5a9359073fe17a8b58e5a085e9a39a950366d9f00217c4ff5878bd312e09d80f460536ea6a3f260b5943a01fe55c158d1cea3fc7bee3d0520aeef04f6d915c82
-  languageName: node
-  linkType: hard
-
 "human-signals@npm:^7.0.0":
   version: 7.0.0
   resolution: "human-signals@npm:7.0.0"
@@ -3604,13 +3573,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"is-stream@npm:^3.0.0":
-  version: 3.0.0
-  resolution: "is-stream@npm:3.0.0"
-  checksum: 10c0/eb2f7127af02ee9aa2a0237b730e47ac2de0d4e76a4a905a50a11557f2339df5765eaea4ceb8029f1efa978586abe776908720bfcb1900c20c6ec5145f6f29d8
-  languageName: node
-  linkType: hard
-
 "is-stream@npm:^4.0.1":
   version: 4.0.1
   resolution: "is-stream@npm:4.0.1"
@@ -4000,13 +3962,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"merge-stream@npm:^2.0.0":
-  version: 2.0.0
-  resolution: "merge-stream@npm:2.0.0"
-  checksum: 10c0/867fdbb30a6d58b011449b8885601ec1690c3e41c759ecd5a9d609094f7aed0096c37823ff4a7190ef0b8f22cc86beb7049196ff68c016e3b3c671d0dac91ce5
-  languageName: node
-  linkType: hard
-
 "merge2@npm:^1.3.0, merge2@npm:^1.4.1":
   version: 1.4.1
   resolution: "merge2@npm:1.4.1"
@@ -4369,7 +4324,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"npm-run-path@npm:^5.1.0, npm-run-path@npm:^5.2.0":
+"npm-run-path@npm:^5.2.0":
   version: 5.3.0
   resolution: "npm-run-path@npm:5.3.0"
   dependencies:
@@ -4413,15 +4368,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"onetime@npm:^6.0.0":
-  version: 6.0.0
-  resolution: "onetime@npm:6.0.0"
-  dependencies:
-    mimic-fn: "npm:^4.0.0"
-  checksum: 10c0/4eef7c6abfef697dd4479345a4100c382d73c149d2d56170a54a07418c50816937ad09500e1ed1e79d235989d073a9bade8557122aee24f0576ecde0f392bb6c
-  languageName: node
-  linkType: hard
-
 "optionator@npm:^0.9.3":
   version: 0.9.4
   resolution: "optionator@npm:0.9.4"
@@ -5458,13 +5404,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"strip-final-newline@npm:^3.0.0":
-  version: 3.0.0
-  resolution: "strip-final-newline@npm:3.0.0"
-  checksum: 10c0/a771a17901427bac6293fd416db7577e2bc1c34a19d38351e9d5478c3c415f523f391003b42ed475f27e33a78233035df183525395f731d3bfb8cdcbd4da08ce
-  languageName: node
-  linkType: hard
-
 "strip-final-newline@npm:^4.0.0":
   version: 4.0.0
   resolution: "strip-final-newline@npm:4.0.0"