chore: Bump slsa-framework workflow (#479)

This workflow relies on the actions/upload-artifact@v3 action, which has
been EOLed. Bumping to v2.0.0+ upgrades that downstream dependency to
@v4.

Author: keelerm84

.github/workflows/manual-sdk-release-artifacts.yml

@@ -67,7 +67,7 @@ jobs:
       actions: read
       id-token: write
       contents: write
-    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.10.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.1.0
     with:
       base64-subjects: "${{ needs.release-sdk.outputs[format('hashes-{0}', matrix.os)] }}"
       upload-assets: true

.github/workflows/release-please.yml

@@ -102,7 +102,7 @@ jobs:
       actions: read
       id-token: write
       contents: write
-    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.10.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.1.0
     with:
       base64-subjects: "${{ needs.release-client.outputs[format('hashes-{0}', matrix.os)] }}"
       upload-assets: true
@@ -119,7 +119,7 @@ jobs:
       actions: read
       id-token: write
       contents: write
-    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.10.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.1.0
     with:
       base64-subjects: "${{ needs.release-server.outputs[format('hashes-{0}', matrix.os)] }}"
       upload-assets: true
@@ -136,7 +136,7 @@ jobs:
       actions: read
       id-token: write
       contents: write
-    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.10.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.1.0
     with:
       base64-subjects: "${{ needs.release-server-redis.outputs[format('hashes-{0}', matrix.os)] }}"
       upload-assets: true